---
_id: '14314'
abstract:
- lang: eng
  text: The execution of cognitive functions requires coordinated circuit activity
    across different brain areas that involves the associated firing of neuronal assemblies.
    Here, we tested the circuit mechanism behind assembly interactions between the
    hippocampus and the medial prefrontal cortex (mPFC) of adult rats by recording
    neuronal populations during a rule-switching task. We identified functionally
    coupled CA1-mPFC cells that synchronized their activity beyond that expected from
    common spatial coding or oscillatory firing. When such cell pairs fired together,
    the mPFC cell strongly phase locked to CA1 theta oscillations and maintained consistent
    theta firing phases, independent of the theta timing of their CA1 counterpart.
    These functionally connected CA1-mPFC cells formed interconnected assemblies.
    While firing together with their CA1 assembly partners, mPFC cells fired along
    specific theta sequences. Our results suggest that upregulated theta oscillatory
    firing of mPFC cells can signal transient interactions with specific CA1 assemblies,
    thus enabling distributed computations.
acknowledgement: We thank A. Cumpelik, H. Chiossi, and L. Bollman for comments on
  an earlier version of this manuscript. This work was funded by EU-FP7 MC-ITN IN-SENS
  (grant 607616).
article_number: '113015'
article_processing_charge: Yes
article_type: original
author:
- first_name: Michele
  full_name: Nardin, Michele
  id: 30BD0376-F248-11E8-B48F-1D18A9856A87
  last_name: Nardin
  orcid: 0000-0001-8849-6570
- first_name: Karola
  full_name: Käfer, Karola
  id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
  last_name: Käfer
- first_name: Federico
  full_name: Stella, Federico
  id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
  last_name: Stella
  orcid: 0000-0001-9439-3148
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Nardin M, Käfer K, Stella F, Csicsvari JL. Theta oscillations as a substrate
    for medial prefrontal-hippocampal assembly interactions. <i>Cell Reports</i>.
    2023;42(9). doi:<a href="https://doi.org/10.1016/j.celrep.2023.113015">10.1016/j.celrep.2023.113015</a>
  apa: Nardin, M., Käfer, K., Stella, F., &#38; Csicsvari, J. L. (2023). Theta oscillations
    as a substrate for medial prefrontal-hippocampal assembly interactions. <i>Cell
    Reports</i>. Elsevier. <a href="https://doi.org/10.1016/j.celrep.2023.113015">https://doi.org/10.1016/j.celrep.2023.113015</a>
  chicago: Nardin, Michele, Karola Käfer, Federico Stella, and Jozsef L Csicsvari.
    “Theta Oscillations as a Substrate for Medial Prefrontal-Hippocampal Assembly
    Interactions.” <i>Cell Reports</i>. Elsevier, 2023. <a href="https://doi.org/10.1016/j.celrep.2023.113015">https://doi.org/10.1016/j.celrep.2023.113015</a>.
  ieee: M. Nardin, K. Käfer, F. Stella, and J. L. Csicsvari, “Theta oscillations as
    a substrate for medial prefrontal-hippocampal assembly interactions,” <i>Cell
    Reports</i>, vol. 42, no. 9. Elsevier, 2023.
  ista: Nardin M, Käfer K, Stella F, Csicsvari JL. 2023. Theta oscillations as a substrate
    for medial prefrontal-hippocampal assembly interactions. Cell Reports. 42(9),
    113015.
  mla: Nardin, Michele, et al. “Theta Oscillations as a Substrate for Medial Prefrontal-Hippocampal
    Assembly Interactions.” <i>Cell Reports</i>, vol. 42, no. 9, 113015, Elsevier,
    2023, doi:<a href="https://doi.org/10.1016/j.celrep.2023.113015">10.1016/j.celrep.2023.113015</a>.
  short: M. Nardin, K. Käfer, F. Stella, J.L. Csicsvari, Cell Reports 42 (2023).
date_created: 2023-09-10T22:01:11Z
date_published: 2023-09-26T00:00:00Z
date_updated: 2023-09-15T07:14:12Z
day: '26'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1016/j.celrep.2023.113015
ec_funded: 1
external_id:
  pmid:
  - '37632747'
file:
- access_level: open_access
  checksum: ca77a304fb813c292550b8604b0fb41d
  content_type: application/pdf
  creator: dernst
  date_created: 2023-09-15T07:12:46Z
  date_updated: 2023-09-15T07:12:46Z
  file_id: '14337'
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  file_size: 4879455
  relation: main_file
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file_date_updated: 2023-09-15T07:12:46Z
has_accepted_license: '1'
intvolume: '        42'
issue: '9'
language:
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month: '09'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 257BBB4C-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '607616'
  name: Inter-and intracellular signalling in schizophrenia
publication: Cell Reports
publication_identifier:
  eissn:
  - 2211-1247
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Theta oscillations as a substrate for medial prefrontal-hippocampal assembly
  interactions
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 42
year: '2023'
...
---
_id: '14656'
abstract:
- lang: eng
  text: Although much is known about how single neurons in the hippocampus represent
    an animal's position, how circuit interactions contribute to spatial coding is
    less well understood. Using a novel statistical estimator and theoretical modeling,
    both developed in the framework of maximum entropy models, we reveal highly structured
    CA1 cell-cell interactions in male rats during open field exploration. The statistics
    of these interactions depend on whether the animal is in a familiar or novel environment.
    In both conditions the circuit interactions optimize the encoding of spatial information,
    but for regimes that differ in the informativeness of their spatial inputs. This
    structure facilitates linear decodability, making the information easy to read
    out by downstream circuits. Overall, our findings suggest that the efficient coding
    hypothesis is not only applicable to individual neuron properties in the sensory
    periphery, but also to neural interactions in the central brain.
acknowledgement: M.N. was supported by the European Union Horizon 2020 Grant 665385.
  J.C. was supported by the European Research Council Consolidator Grant 281511. G.T.
  was supported by the Austrian Science Fund (FWF) Grant P34015. C.S. was supported
  by an Institute of Science and Technology fellow award and by the National Science
  Foundation (NSF) Award No. 1922658. We thank Peter Baracskay, Karola Kaefer, and
  Hugo Malagon-Vina for the acquisition of the data. We also thank Federico Stella,
  Wiktor Młynarski, Dori Derdikman, Colin Bredenberg, Roman Huszar, Heloisa Chiossi,
  Lorenzo Posani, and Mohamady El-Gaby for comments on an earlier version of the manuscript.
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Michele
  full_name: Nardin, Michele
  id: 30BD0376-F248-11E8-B48F-1D18A9856A87
  last_name: Nardin
  orcid: 0000-0001-8849-6570
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Gašper
  full_name: Tkačik, Gašper
  id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
  last_name: Tkačik
  orcid: 0000-0002-6699-1455
- first_name: Cristina
  full_name: Savin, Cristina
  id: 3933349E-F248-11E8-B48F-1D18A9856A87
  last_name: Savin
citation:
  ama: Nardin M, Csicsvari JL, Tkačik G, Savin C. The structure of hippocampal CA1
    interactions optimizes spatial coding across experience. <i>The Journal of Neuroscience</i>.
    2023;43(48):8140-8156. doi:<a href="https://doi.org/10.1523/JNEUROSCI.0194-23.2023">10.1523/JNEUROSCI.0194-23.2023</a>
  apa: Nardin, M., Csicsvari, J. L., Tkačik, G., &#38; Savin, C. (2023). The structure
    of hippocampal CA1 interactions optimizes spatial coding across experience. <i>The
    Journal of Neuroscience</i>. Society of Neuroscience. <a href="https://doi.org/10.1523/JNEUROSCI.0194-23.2023">https://doi.org/10.1523/JNEUROSCI.0194-23.2023</a>
  chicago: Nardin, Michele, Jozsef L Csicsvari, Gašper Tkačik, and Cristina Savin.
    “The Structure of Hippocampal CA1 Interactions Optimizes Spatial Coding across
    Experience.” <i>The Journal of Neuroscience</i>. Society of Neuroscience, 2023.
    <a href="https://doi.org/10.1523/JNEUROSCI.0194-23.2023">https://doi.org/10.1523/JNEUROSCI.0194-23.2023</a>.
  ieee: M. Nardin, J. L. Csicsvari, G. Tkačik, and C. Savin, “The structure of hippocampal
    CA1 interactions optimizes spatial coding across experience,” <i>The Journal of
    Neuroscience</i>, vol. 43, no. 48. Society of Neuroscience, pp. 8140–8156, 2023.
  ista: Nardin M, Csicsvari JL, Tkačik G, Savin C. 2023. The structure of hippocampal
    CA1 interactions optimizes spatial coding across experience. The Journal of Neuroscience.
    43(48), 8140–8156.
  mla: Nardin, Michele, et al. “The Structure of Hippocampal CA1 Interactions Optimizes
    Spatial Coding across Experience.” <i>The Journal of Neuroscience</i>, vol. 43,
    no. 48, Society of Neuroscience, 2023, pp. 8140–56, doi:<a href="https://doi.org/10.1523/JNEUROSCI.0194-23.2023">10.1523/JNEUROSCI.0194-23.2023</a>.
  short: M. Nardin, J.L. Csicsvari, G. Tkačik, C. Savin, The Journal of Neuroscience
    43 (2023) 8140–8156.
date_created: 2023-12-10T23:00:58Z
date_published: 2023-11-29T00:00:00Z
date_updated: 2023-12-11T11:37:20Z
day: '29'
ddc:
- '570'
department:
- _id: JoCs
- _id: GaTk
doi: 10.1523/JNEUROSCI.0194-23.2023
ec_funded: 1
external_id:
  pmid:
  - '37758476'
file:
- access_level: closed
  checksum: e2503c8f84be1050e28f64320f1d5bd2
  content_type: application/pdf
  creator: dernst
  date_created: 2023-12-11T11:30:37Z
  date_updated: 2023-12-11T11:30:37Z
  embargo: 2024-06-01
  embargo_to: open_access
  file_id: '14674'
  file_name: 2023_JourNeuroscience_Nardin.pdf
  file_size: 2280632
  relation: main_file
file_date_updated: 2023-12-11T11:30:37Z
has_accepted_license: '1'
intvolume: '        43'
issue: '48'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1523/JNEUROSCI.0194-23.2023
month: '11'
oa: 1
oa_version: Published Version
page: 8140-8156
pmid: 1
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
- _id: 626c45b5-2b32-11ec-9570-e509828c1ba6
  grant_number: P34015
  name: Efficient coding with biophysical realism
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: The Journal of Neuroscience
publication_identifier:
  eissn:
  - 1529-2401
publication_status: published
publisher: Society of Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: The structure of hippocampal CA1 interactions optimizes spatial coding across
  experience
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 43
year: '2023'
...
---
_id: '11951'
abstract:
- lang: eng
  text: The mammalian hippocampal formation (HF) plays a key role in several higher
    brain functions, such as spatial coding, learning and memory. Its simple circuit
    architecture is often viewed as a trisynaptic loop, processing input originating
    from the superficial layers of the entorhinal cortex (EC) and sending it back
    to its deeper layers. Here, we show that excitatory neurons in layer 6b of the
    mouse EC project to all sub-regions comprising the HF and receive input from the
    CA1, thalamus and claustrum. Furthermore, their output is characterized by unique
    slow-decaying excitatory postsynaptic currents capable of driving plateau-like
    potentials in their postsynaptic targets. Optogenetic inhibition of the EC-6b
    pathway affects spatial coding in CA1 pyramidal neurons, while cell ablation impairs
    not only acquisition of new spatial memories, but also degradation of previously
    acquired ones. Our results provide evidence of a functional role for cortical
    layer 6b neurons in the adult brain.
acknowledged_ssus:
- _id: Bio
- _id: SSU
acknowledgement: We thank F. Marr and A. Schlögl for technical assistance, E. Kralli-Beller
  for manuscript editing, as well as C. Sommer and the Imaging and Optics Facility
  of the Institute of Science and Technology Austria (ISTA) for image analysis scripts
  and microscopy support. We extend our gratitude to J. Wallenschus and D. Rangel
  Guerrero for technical assistance acquiring single-unit data and I. Gridchyn for
  help with single-unit clustering. Finally, we also thank B. Suter for discussions,
  A. Saunders, M. Jösch, and H. Monyer for critically reading earlier versions of
  the manuscript, C. Petersen for sharing clearing protocols, and the Scientific Service
  Units of ISTA for efficient support. This project was funded by the European Research
  Council (ERC) under the European Union’s Horizon 2020 research and innovation programme
  (ERC advanced grant No 692692 to P.J.) and the Fond zur Förderung der Wissenschaftlichen
  Forschung (Z 312-B27, Wittgenstein award for P.J. and I3600-B27 for J.G.D. and P.V.).
article_number: '4826'
article_processing_charge: No
article_type: original
author:
- first_name: Yoav
  full_name: Ben Simon, Yoav
  id: 43DF3136-F248-11E8-B48F-1D18A9856A87
  last_name: Ben Simon
- first_name: Karola
  full_name: Käfer, Karola
  id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
  last_name: Käfer
- first_name: Philipp
  full_name: Velicky, Philipp
  id: 39BDC62C-F248-11E8-B48F-1D18A9856A87
  last_name: Velicky
  orcid: 0000-0002-2340-7431
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Johann G
  full_name: Danzl, Johann G
  id: 42EFD3B6-F248-11E8-B48F-1D18A9856A87
  last_name: Danzl
  orcid: 0000-0001-8559-3973
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Ben Simon Y, Käfer K, Velicky P, Csicsvari JL, Danzl JG, Jonas PM. A direct
    excitatory projection from entorhinal layer 6b neurons to the hippocampus contributes
    to spatial coding and memory. <i>Nature Communications</i>. 2022;13. doi:<a href="https://doi.org/10.1038/s41467-022-32559-8">10.1038/s41467-022-32559-8</a>
  apa: Ben Simon, Y., Käfer, K., Velicky, P., Csicsvari, J. L., Danzl, J. G., &#38;
    Jonas, P. M. (2022). A direct excitatory projection from entorhinal layer 6b neurons
    to the hippocampus contributes to spatial coding and memory. <i>Nature Communications</i>.
    Springer Nature. <a href="https://doi.org/10.1038/s41467-022-32559-8">https://doi.org/10.1038/s41467-022-32559-8</a>
  chicago: Ben Simon, Yoav, Karola Käfer, Philipp Velicky, Jozsef L Csicsvari, Johann
    G Danzl, and Peter M Jonas. “A Direct Excitatory Projection from Entorhinal Layer
    6b Neurons to the Hippocampus Contributes to Spatial Coding and Memory.” <i>Nature
    Communications</i>. Springer Nature, 2022. <a href="https://doi.org/10.1038/s41467-022-32559-8">https://doi.org/10.1038/s41467-022-32559-8</a>.
  ieee: Y. Ben Simon, K. Käfer, P. Velicky, J. L. Csicsvari, J. G. Danzl, and P. M.
    Jonas, “A direct excitatory projection from entorhinal layer 6b neurons to the
    hippocampus contributes to spatial coding and memory,” <i>Nature Communications</i>,
    vol. 13. Springer Nature, 2022.
  ista: Ben Simon Y, Käfer K, Velicky P, Csicsvari JL, Danzl JG, Jonas PM. 2022. A
    direct excitatory projection from entorhinal layer 6b neurons to the hippocampus
    contributes to spatial coding and memory. Nature Communications. 13, 4826.
  mla: Ben Simon, Yoav, et al. “A Direct Excitatory Projection from Entorhinal Layer
    6b Neurons to the Hippocampus Contributes to Spatial Coding and Memory.” <i>Nature
    Communications</i>, vol. 13, 4826, Springer Nature, 2022, doi:<a href="https://doi.org/10.1038/s41467-022-32559-8">10.1038/s41467-022-32559-8</a>.
  short: Y. Ben Simon, K. Käfer, P. Velicky, J.L. Csicsvari, J.G. Danzl, P.M. Jonas,
    Nature Communications 13 (2022).
date_created: 2022-08-24T08:25:50Z
date_published: 2022-08-16T00:00:00Z
date_updated: 2023-08-03T13:01:19Z
day: '16'
ddc:
- '570'
department:
- _id: JoCs
- _id: PeJo
- _id: JoDa
doi: 10.1038/s41467-022-32559-8
ec_funded: 1
external_id:
  isi:
  - '000841396400008'
file:
- access_level: open_access
  checksum: 405936d9e4d33625d80c093c9713a91f
  content_type: application/pdf
  creator: dernst
  date_created: 2022-08-26T11:51:40Z
  date_updated: 2022-08-26T11:51:40Z
  file_id: '11990'
  file_name: 2022_NatureCommunications_BenSimon.pdf
  file_size: 5910357
  relation: main_file
  success: 1
file_date_updated: 2022-08-26T11:51:40Z
has_accepted_license: '1'
intvolume: '        13'
isi: 1
keyword:
- General Physics and Astronomy
- General Biochemistry
- Genetics and Molecular Biology
- General Chemistry
- Multidisciplinary
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 265CB4D0-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I03600
  name: Optical control of synaptic function via adhesion molecules
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: The Wittgenstein Prize
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: A direct excitatory projection from entorhinal layer 6b neurons to the hippocampus
  contributes to spatial coding and memory
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 13
year: '2022'
...
---
_id: '10077'
abstract:
- lang: eng
  text: Although much is known about how single neurons in the hippocampus represent
    an animal’s position, how cell-cell interactions contribute to spatial coding
    remains poorly understood. Using a novel statistical estimator and theoretical
    modeling, both developed in the framework of maximum entropy models, we reveal
    highly structured cell-to-cell interactions whose statistics depend on familiar
    vs. novel environment. In both conditions the circuit interactions optimize the
    encoding of spatial information, but for regimes that differ in the signal-to-noise
    ratio of their spatial inputs. Moreover, the topology of the interactions facilitates
    linear decodability, making the information easy to read out by downstream circuits.
    These findings suggest that the efficient coding hypothesis is not applicable
    only to individual neuron properties in the sensory periphery, but also to neural
    interactions in the central brain.
acknowledgement: We thank Peter Baracskay, Karola Kaefer and Hugo Malagon-Vina for
  the acquisition of the data. We thank Federico Stella for comments on an earlier
  version of the manuscript. MN was supported by European Union Horizon 2020 grant
  665385, JC was supported by European Research Council consolidator grant 281511,
  GT was supported by the Austrian Science Fund (FWF) grant P34015, CS was supported
  by an IST fellow grant, National Institute of Mental Health Award 1R01MH125571-01,
  by the National Science Foundation under NSF Award No. 1922658 and a Google faculty
  award.
article_processing_charge: No
author:
- first_name: Michele
  full_name: Nardin, Michele
  id: 30BD0376-F248-11E8-B48F-1D18A9856A87
  last_name: Nardin
  orcid: 0000-0001-8849-6570
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Gašper
  full_name: Tkačik, Gašper
  id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
  last_name: Tkačik
  orcid: 0000-0002-6699-1455
- first_name: Cristina
  full_name: Savin, Cristina
  id: 3933349E-F248-11E8-B48F-1D18A9856A87
  last_name: Savin
citation:
  ama: Nardin M, Csicsvari JL, Tkačik G, Savin C. The structure of hippocampal CA1
    interactions optimizes spatial coding across experience. <i>bioRxiv</i>. doi:<a
    href="https://doi.org/10.1101/2021.09.28.460602">10.1101/2021.09.28.460602</a>
  apa: Nardin, M., Csicsvari, J. L., Tkačik, G., &#38; Savin, C. (n.d.). The structure
    of hippocampal CA1 interactions optimizes spatial coding across experience. <i>bioRxiv</i>.
    Cold Spring Harbor Laboratory. <a href="https://doi.org/10.1101/2021.09.28.460602">https://doi.org/10.1101/2021.09.28.460602</a>
  chicago: Nardin, Michele, Jozsef L Csicsvari, Gašper Tkačik, and Cristina Savin.
    “The Structure of Hippocampal CA1 Interactions Optimizes Spatial Coding across
    Experience.” <i>BioRxiv</i>. Cold Spring Harbor Laboratory, n.d. <a href="https://doi.org/10.1101/2021.09.28.460602">https://doi.org/10.1101/2021.09.28.460602</a>.
  ieee: M. Nardin, J. L. Csicsvari, G. Tkačik, and C. Savin, “The structure of hippocampal
    CA1 interactions optimizes spatial coding across experience,” <i>bioRxiv</i>.
    Cold Spring Harbor Laboratory.
  ista: Nardin M, Csicsvari JL, Tkačik G, Savin C. The structure of hippocampal CA1
    interactions optimizes spatial coding across experience. bioRxiv, <a href="https://doi.org/10.1101/2021.09.28.460602">10.1101/2021.09.28.460602</a>.
  mla: Nardin, Michele, et al. “The Structure of Hippocampal CA1 Interactions Optimizes
    Spatial Coding across Experience.” <i>BioRxiv</i>, Cold Spring Harbor Laboratory,
    doi:<a href="https://doi.org/10.1101/2021.09.28.460602">10.1101/2021.09.28.460602</a>.
  short: M. Nardin, J.L. Csicsvari, G. Tkačik, C. Savin, BioRxiv (n.d.).
date_created: 2021-10-04T06:23:34Z
date_published: 2021-09-29T00:00:00Z
date_updated: 2024-03-25T23:30:09Z
day: '29'
department:
- _id: GradSch
- _id: JoCs
- _id: GaTk
doi: 10.1101/2021.09.28.460602
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.biorxiv.org/content/10.1101/2021.09.28.460602
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
- _id: 626c45b5-2b32-11ec-9570-e509828c1ba6
  grant_number: P34015
  name: Efficient coding with biophysical realism
publication: bioRxiv
publication_status: submitted
publisher: Cold Spring Harbor Laboratory
related_material:
  record:
  - id: '11932'
    relation: dissertation_contains
    status: public
status: public
title: The structure of hippocampal CA1 interactions optimizes spatial coding across
  experience
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '10080'
abstract:
- lang: eng
  text: Hippocampal and neocortical neural activity is modulated by the position of
    the individual in space. While hippocampal neurons provide the basis for a spatial
    map, prefrontal cortical neurons generalize over environmental features. Whether
    these generalized representations result from a bidirectional interaction with,
    or are mainly derived from hippocampal spatial representations is not known. By
    examining simultaneously recorded hippocampal and medial prefrontal neurons, we
    observed that prefrontal spatial representations show a delayed coherence with
    hippocampal ones. We also identified subpopulations of cells in the hippocampus
    and medial prefrontal cortex that formed functional cross-area couplings; these
    resembled the optimal connections predicted by a probabilistic model of spatial
    information transfer and generalization. Moreover, cross-area couplings were strongest
    and had the shortest delay preceding spatial decision-making. Our results suggest
    that generalized spatial coding in the medial prefrontal cortex is inherited from
    spatial representations in the hippocampus, and that the routing of information
    can change dynamically with behavioral demands.
acknowledgement: We thank Federico Stella for invaluable suggestions and discussions.
  We thank Yosman BapatDhar and Andrea Cumpelik for comments, help and suggestions
  on the exposure of the text. We thank Predrag Živadinović and Juliana Couras for
  comments on the text and the figures. This work was supported by the EU-FP7 MC-ITN
  IN-SENS (grant 607616).
article_processing_charge: No
author:
- first_name: Michele
  full_name: Nardin, Michele
  id: 30BD0376-F248-11E8-B48F-1D18A9856A87
  last_name: Nardin
  orcid: 0000-0001-8849-6570
- first_name: Karola
  full_name: Käfer, Karola
  id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
  last_name: Käfer
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Nardin M, Käfer K, Csicsvari JL. The generalized spatial representation in
    the prefrontal cortex is inherited from the hippocampus. <i>bioRxiv</i>. doi:<a
    href="https://doi.org/10.1101/2021.09.30.462269">10.1101/2021.09.30.462269</a>
  apa: Nardin, M., Käfer, K., &#38; Csicsvari, J. L. (n.d.). The generalized spatial
    representation in the prefrontal cortex is inherited from the hippocampus. <i>bioRxiv</i>.
    Cold Spring Harbor Laboratory. <a href="https://doi.org/10.1101/2021.09.30.462269">https://doi.org/10.1101/2021.09.30.462269</a>
  chicago: Nardin, Michele, Karola Käfer, and Jozsef L Csicsvari. “The Generalized
    Spatial Representation in the Prefrontal Cortex Is Inherited from the Hippocampus.”
    <i>BioRxiv</i>. Cold Spring Harbor Laboratory, n.d. <a href="https://doi.org/10.1101/2021.09.30.462269">https://doi.org/10.1101/2021.09.30.462269</a>.
  ieee: M. Nardin, K. Käfer, and J. L. Csicsvari, “The generalized spatial representation
    in the prefrontal cortex is inherited from the hippocampus,” <i>bioRxiv</i>. Cold
    Spring Harbor Laboratory.
  ista: Nardin M, Käfer K, Csicsvari JL. The generalized spatial representation in
    the prefrontal cortex is inherited from the hippocampus. bioRxiv, <a href="https://doi.org/10.1101/2021.09.30.462269">10.1101/2021.09.30.462269</a>.
  mla: Nardin, Michele, et al. “The Generalized Spatial Representation in the Prefrontal
    Cortex Is Inherited from the Hippocampus.” <i>BioRxiv</i>, Cold Spring Harbor
    Laboratory, doi:<a href="https://doi.org/10.1101/2021.09.30.462269">10.1101/2021.09.30.462269</a>.
  short: M. Nardin, K. Käfer, J.L. Csicsvari, BioRxiv (n.d.).
date_created: 2021-10-04T06:28:32Z
date_published: 2021-10-02T00:00:00Z
date_updated: 2021-10-05T12:34:26Z
day: '02'
department:
- _id: GradSch
- _id: JoCs
doi: 10.1101/2021.09.30.462269
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.biorxiv.org/content/10.1101/2021.09.30.462269
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 257BBB4C-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '607616'
  name: Inter-and intracellular signalling in schizophrenia
publication: bioRxiv
publication_status: submitted
publisher: Cold Spring Harbor Laboratory
status: public
title: The generalized spatial representation in the prefrontal cortex is inherited
  from the hippocampus
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '8563'
abstract:
- lang: eng
  text: "Supplementary data  provided for the provided for the publication:\r\nIgor
    Gridchyn , Philipp Schoenenberger , Joseph O'Neill , Jozsef Csicsvari (2020) Optogenetic
    inhibition-mediated activity-dependent modification of CA1 pyramidal-interneuron
    connections during behavior. Elife."
article_processing_charge: No
author:
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Igor
  full_name: Gridchyn, Igor
  id: 4B60654C-F248-11E8-B48F-1D18A9856A87
  last_name: Gridchyn
  orcid: 0000-0002-1807-1929
- first_name: Philipp
  full_name: Schönenberger, Philipp
  id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
  last_name: Schönenberger
citation:
  ama: Csicsvari JL, Gridchyn I, Schönenberger P. Optogenetic alteration of hippocampal
    network activity. 2020. doi:<a href="https://doi.org/10.15479/AT:ISTA:8563">10.15479/AT:ISTA:8563</a>
  apa: Csicsvari, J. L., Gridchyn, I., &#38; Schönenberger, P. (2020). Optogenetic
    alteration of hippocampal network activity. Institute of Science and Technology
    Austria. <a href="https://doi.org/10.15479/AT:ISTA:8563">https://doi.org/10.15479/AT:ISTA:8563</a>
  chicago: Csicsvari, Jozsef L, Igor Gridchyn, and Philipp Schönenberger. “Optogenetic
    Alteration of Hippocampal Network Activity.” Institute of Science and Technology
    Austria, 2020. <a href="https://doi.org/10.15479/AT:ISTA:8563">https://doi.org/10.15479/AT:ISTA:8563</a>.
  ieee: J. L. Csicsvari, I. Gridchyn, and P. Schönenberger, “Optogenetic alteration
    of hippocampal network activity.” Institute of Science and Technology Austria,
    2020.
  ista: Csicsvari JL, Gridchyn I, Schönenberger P. 2020. Optogenetic alteration of
    hippocampal network activity, Institute of Science and Technology Austria, <a
    href="https://doi.org/10.15479/AT:ISTA:8563">10.15479/AT:ISTA:8563</a>.
  mla: Csicsvari, Jozsef L., et al. <i>Optogenetic Alteration of Hippocampal Network
    Activity</i>. Institute of Science and Technology Austria, 2020, doi:<a href="https://doi.org/10.15479/AT:ISTA:8563">10.15479/AT:ISTA:8563</a>.
  short: J.L. Csicsvari, I. Gridchyn, P. Schönenberger, (2020).
contributor:
- contributor_type: project_leader
  first_name: Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
date_created: 2020-09-23T14:39:54Z
date_published: 2020-10-19T00:00:00Z
date_updated: 2024-02-21T12:43:41Z
day: '19'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.15479/AT:ISTA:8563
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oa: 1
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publisher: Institute of Science and Technology Austria
related_material:
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  - id: '8740'
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    status: public
status: public
title: Optogenetic alteration of hippocampal network activity
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: research_data
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year: '2020'
...
---
_id: '8740'
abstract:
- lang: eng
  text: In vitro work revealed that excitatory synaptic inputs to hippocampal inhibitory
    interneurons could undergo Hebbian, associative, or non-associative plasticity.
    Both behavioral and learning-dependent reorganization of these connections has
    also been demonstrated by measuring spike transmission probabilities in pyramidal
    cell-interneuron spike cross-correlations that indicate monosynaptic connections.
    Here we investigated the activity-dependent modification of these connections
    during exploratory behavior in rats by optogenetically inhibiting pyramidal cell
    and interneuron subpopulations. Light application and associated firing alteration
    of pyramidal and interneuron populations led to lasting changes in pyramidal-interneuron
    connection weights as indicated by spike transmission changes. Spike transmission
    alterations were predicted by the light-mediated changes in the number of pre-
    and postsynaptic spike pairing events and by firing rate changes of interneurons
    but not pyramidal cells. This work demonstrates the presence of activity-dependent
    associative and non-associative reorganization of pyramidal-interneuron connections
    triggered by the optogenetic modification of the firing rate and spike synchrony
    of cells.
acknowledgement: We thank Michele Nardin and Federico Stella for comments on an earlier
  version of the manuscript. K Deisseroth for providing the pAAV-CaMKIIα::eNpHR3.0-YFP
  plasmid through Addgene. E Boyden for providing AAV2/1.CaMKII::ArchT.GFP.WPRE.SV40
  plasmid through Penn Vector Core. This work was supported by the Austrian Science
  Fund (I02072 and I03713) and a Swiss National Science Foundation grant to PS. The
  authors declare no conflicts of interest.
article_number: '61106'
article_processing_charge: No
article_type: original
author:
- first_name: Igor
  full_name: Gridchyn, Igor
  id: 4B60654C-F248-11E8-B48F-1D18A9856A87
  last_name: Gridchyn
  orcid: 0000-0002-1807-1929
- first_name: Philipp
  full_name: Schönenberger, Philipp
  id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
  last_name: Schönenberger
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Gridchyn I, Schönenberger P, O’Neill J, Csicsvari JL. Optogenetic inhibition-mediated
    activity-dependent modification of CA1 pyramidal-interneuron connections during
    behavior. <i>eLife</i>. 2020;9. doi:<a href="https://doi.org/10.7554/eLife.61106">10.7554/eLife.61106</a>
  apa: Gridchyn, I., Schönenberger, P., O’Neill, J., &#38; Csicsvari, J. L. (2020).
    Optogenetic inhibition-mediated activity-dependent modification of CA1 pyramidal-interneuron
    connections during behavior. <i>ELife</i>. eLife Sciences Publications. <a href="https://doi.org/10.7554/eLife.61106">https://doi.org/10.7554/eLife.61106</a>
  chicago: Gridchyn, Igor, Philipp Schönenberger, Joseph O’Neill, and Jozsef L Csicsvari.
    “Optogenetic Inhibition-Mediated Activity-Dependent Modification of CA1 Pyramidal-Interneuron
    Connections during Behavior.” <i>ELife</i>. eLife Sciences Publications, 2020.
    <a href="https://doi.org/10.7554/eLife.61106">https://doi.org/10.7554/eLife.61106</a>.
  ieee: I. Gridchyn, P. Schönenberger, J. O’Neill, and J. L. Csicsvari, “Optogenetic
    inhibition-mediated activity-dependent modification of CA1 pyramidal-interneuron
    connections during behavior,” <i>eLife</i>, vol. 9. eLife Sciences Publications,
    2020.
  ista: Gridchyn I, Schönenberger P, O’Neill J, Csicsvari JL. 2020. Optogenetic inhibition-mediated
    activity-dependent modification of CA1 pyramidal-interneuron connections during
    behavior. eLife. 9, 61106.
  mla: Gridchyn, Igor, et al. “Optogenetic Inhibition-Mediated Activity-Dependent
    Modification of CA1 Pyramidal-Interneuron Connections during Behavior.” <i>ELife</i>,
    vol. 9, 61106, eLife Sciences Publications, 2020, doi:<a href="https://doi.org/10.7554/eLife.61106">10.7554/eLife.61106</a>.
  short: I. Gridchyn, P. Schönenberger, J. O’Neill, J.L. Csicsvari, ELife 9 (2020).
date_created: 2020-11-08T23:01:25Z
date_published: 2020-10-05T00:00:00Z
date_updated: 2024-02-21T12:43:40Z
day: '05'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.7554/eLife.61106
external_id:
  isi:
  - '000584369000001'
file:
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  checksum: 6a7b0543c440f4c000a1864e69377d95
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  creator: dernst
  date_created: 2020-11-09T09:17:40Z
  date_updated: 2020-11-09T09:17:40Z
  file_id: '8749'
  file_name: 2020_eLife_Gridchyn.pdf
  file_size: 447669
  relation: main_file
  success: 1
file_date_updated: 2020-11-09T09:17:40Z
has_accepted_license: '1'
intvolume: '         9'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 257D4372-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I2072-B27
  name: Interneuron plasticity during spatial learning
- _id: 2654F984-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I03713
  name: Interneuro Plasticity During Spatial Learning
publication: eLife
publication_identifier:
  eissn:
  - 2050084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
related_material:
  record:
  - id: '8563'
    relation: research_data
    status: public
scopus_import: '1'
status: public
title: Optogenetic inhibition-mediated activity-dependent modification of CA1 pyramidal-interneuron
  connections during behavior
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 9
year: '2020'
...
---
_id: '7472'
abstract:
- lang: eng
  text: Temporally organized reactivation of experiences during awake immobility periods
    is thought to underlie cognitive processes like planning and evaluation. While
    replay of trajectories is well established for the hippocampus, it is unclear
    whether the medial prefrontal cortex (mPFC) can reactivate sequential behavioral
    experiences in the awake state to support task execution. We simultaneously recorded
    from hippocampal and mPFC principal neurons in rats performing a mPFC-dependent
    rule-switching task on a plus maze. We found that mPFC neuronal activity encoded
    relative positions between the start and goal. During awake immobility periods,
    the mPFC replayed temporally organized sequences of these generalized positions,
    resembling entire spatial trajectories. The occurrence of mPFC trajectory replay
    positively correlated with rule-switching performance. However, hippocampal and
    mPFC trajectory replay occurred independently, indicating different functions.
    These results demonstrate that the mPFC can replay ordered activity patterns representing
    generalized locations and suggest that mPFC replay might have a role in flexible
    behavior.
acknowledged_ssus:
- _id: M-Shop
acknowledgement: We thank Todor Asenov and Thomas Menner from the Machine Shop for
  the drive design and production, Hugo Malagon-Vina for assistance in maze automatization,
  Jago Wallenschus for taking the images of the histology, and Federico Stella and
  Juan Felipe Ramirez-Villegas for comments on an earlier version of the manuscript.
  This work was supported by the EU-FP7 MC-ITN IN-SENS (grant 607616 ).
article_processing_charge: No
article_type: original
author:
- first_name: Karola
  full_name: Käfer, Karola
  id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
  last_name: Käfer
- first_name: Michele
  full_name: Nardin, Michele
  id: 30BD0376-F248-11E8-B48F-1D18A9856A87
  last_name: Nardin
  orcid: 0000-0001-8849-6570
- first_name: Karel
  full_name: Blahna, Karel
  id: 3EA859AE-F248-11E8-B48F-1D18A9856A87
  last_name: Blahna
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Käfer K, Nardin M, Blahna K, Csicsvari JL. Replay of behavioral sequences in
    the medial prefrontal cortex during rule switching. <i>Neuron</i>. 2020;106(1):P154-165.e6.
    doi:<a href="https://doi.org/10.1016/j.neuron.2020.01.015">10.1016/j.neuron.2020.01.015</a>
  apa: Käfer, K., Nardin, M., Blahna, K., &#38; Csicsvari, J. L. (2020). Replay of
    behavioral sequences in the medial prefrontal cortex during rule switching. <i>Neuron</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.neuron.2020.01.015">https://doi.org/10.1016/j.neuron.2020.01.015</a>
  chicago: Käfer, Karola, Michele Nardin, Karel Blahna, and Jozsef L Csicsvari. “Replay
    of Behavioral Sequences in the Medial Prefrontal Cortex during Rule Switching.”
    <i>Neuron</i>. Elsevier, 2020. <a href="https://doi.org/10.1016/j.neuron.2020.01.015">https://doi.org/10.1016/j.neuron.2020.01.015</a>.
  ieee: K. Käfer, M. Nardin, K. Blahna, and J. L. Csicsvari, “Replay of behavioral
    sequences in the medial prefrontal cortex during rule switching,” <i>Neuron</i>,
    vol. 106, no. 1. Elsevier, p. P154–165.e6, 2020.
  ista: Käfer K, Nardin M, Blahna K, Csicsvari JL. 2020. Replay of behavioral sequences
    in the medial prefrontal cortex during rule switching. Neuron. 106(1), P154–165.e6.
  mla: Käfer, Karola, et al. “Replay of Behavioral Sequences in the Medial Prefrontal
    Cortex during Rule Switching.” <i>Neuron</i>, vol. 106, no. 1, Elsevier, 2020,
    p. P154–165.e6, doi:<a href="https://doi.org/10.1016/j.neuron.2020.01.015">10.1016/j.neuron.2020.01.015</a>.
  short: K. Käfer, M. Nardin, K. Blahna, J.L. Csicsvari, Neuron 106 (2020) P154–165.e6.
date_created: 2020-02-10T15:45:48Z
date_published: 2020-04-08T00:00:00Z
date_updated: 2023-08-17T14:38:02Z
day: '08'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2020.01.015
ec_funded: 1
external_id:
  isi:
  - '000525319300016'
  pmid:
  - '32032512'
intvolume: '       106'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.neuron.2020.01.015
month: '04'
oa: 1
oa_version: Published Version
page: P154-165.e6
pmid: 1
project:
- _id: 257BBB4C-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '607616'
  name: Inter-and intracellular signalling in schizophrenia
publication: Neuron
publication_identifier:
  issn:
  - 0896-6273
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/this-brain-area-helps-us-decide/
scopus_import: '1'
status: public
title: Replay of behavioral sequences in the medial prefrontal cortex during rule
  switching
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2020'
...
---
_id: '7684'
article_processing_charge: No
article_type: original
author:
- first_name: Igor
  full_name: Gridchyn, Igor
  id: 4B60654C-F248-11E8-B48F-1D18A9856A87
  last_name: Gridchyn
  orcid: 0000-0002-1807-1929
- first_name: Philipp
  full_name: Schönenberger, Philipp
  id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
  last_name: Schönenberger
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Gridchyn I, Schönenberger P, O’Neill J, Csicsvari JL. Assembly-specific disruption
    of hippocampal replay leads to selective memory deficit. <i>Neuron</i>. 2020;106(2):291-300.e6.
    doi:<a href="https://doi.org/10.1016/j.neuron.2020.01.021">10.1016/j.neuron.2020.01.021</a>
  apa: Gridchyn, I., Schönenberger, P., O’Neill, J., &#38; Csicsvari, J. L. (2020).
    Assembly-specific disruption of hippocampal replay leads to selective memory deficit.
    <i>Neuron</i>. Elsevier. <a href="https://doi.org/10.1016/j.neuron.2020.01.021">https://doi.org/10.1016/j.neuron.2020.01.021</a>
  chicago: Gridchyn, Igor, Philipp Schönenberger, Joseph O’Neill, and Jozsef L Csicsvari.
    “Assembly-Specific Disruption of Hippocampal Replay Leads to Selective Memory
    Deficit.” <i>Neuron</i>. Elsevier, 2020. <a href="https://doi.org/10.1016/j.neuron.2020.01.021">https://doi.org/10.1016/j.neuron.2020.01.021</a>.
  ieee: I. Gridchyn, P. Schönenberger, J. O’Neill, and J. L. Csicsvari, “Assembly-specific
    disruption of hippocampal replay leads to selective memory deficit,” <i>Neuron</i>,
    vol. 106, no. 2. Elsevier, p. 291–300.e6, 2020.
  ista: Gridchyn I, Schönenberger P, O’Neill J, Csicsvari JL. 2020. Assembly-specific
    disruption of hippocampal replay leads to selective memory deficit. Neuron. 106(2),
    291–300.e6.
  mla: Gridchyn, Igor, et al. “Assembly-Specific Disruption of Hippocampal Replay
    Leads to Selective Memory Deficit.” <i>Neuron</i>, vol. 106, no. 2, Elsevier,
    2020, p. 291–300.e6, doi:<a href="https://doi.org/10.1016/j.neuron.2020.01.021">10.1016/j.neuron.2020.01.021</a>.
  short: I. Gridchyn, P. Schönenberger, J. O’Neill, J.L. Csicsvari, Neuron 106 (2020)
    291–300.e6.
date_created: 2020-04-26T22:00:45Z
date_published: 2020-04-22T00:00:00Z
date_updated: 2023-08-21T06:15:31Z
day: '22'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2020.01.021
ec_funded: 1
external_id:
  isi:
  - '000528268200013'
  pmid:
  - '32070475'
intvolume: '       106'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.neuron.2020.01.021
month: '04'
oa: 1
oa_version: Published Version
page: 291-300.e6
pmid: 1
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
publication: Neuron
publication_identifier:
  eissn:
  - '10974199'
  issn:
  - '08966273'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/librarian-of-memory/
scopus_import: '1'
status: public
title: Assembly-specific disruption of hippocampal replay leads to selective memory
  deficit
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2020'
...
---
_id: '5828'
abstract:
- lang: eng
  text: Hippocampus is needed for both spatial working and reference memories. Here,
    using a radial eight-arm maze, we examined how the combined demand on these memories
    influenced CA1 place cell assemblies while reference memories were partially updated.
    This was contrasted with control tasks requiring only working memory or the update
    of reference memory. Reference memory update led to the reward-directed place
    field shifts at newly rewarded arms and to the gradual strengthening of firing
    in passes between newly rewarded arms but not between those passes that included
    a familiar-rewarded arm. At the maze center, transient network synchronization
    periods preferentially replayed trajectories of the next chosen arm in reference
    memory tasks but the previously visited arm in the working memory task. Hence,
    reference memory demand was uniquely associated with a gradual, goal novelty-related
    reorganization of place cell assemblies and with trajectory replay that reflected
    the animal's decision of which arm to visit next.
article_processing_charge: No
article_type: original
author:
- first_name: Haibing
  full_name: Xu, Haibing
  id: 310349D0-F248-11E8-B48F-1D18A9856A87
  last_name: Xu
- first_name: Peter
  full_name: Baracskay, Peter
  id: 361CC00E-F248-11E8-B48F-1D18A9856A87
  last_name: Baracskay
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Xu H, Baracskay P, O’Neill J, Csicsvari JL. Assembly responses of hippocampal
    CA1 place cells predict learned behavior in goal-directed spatial tasks on the
    radial eight-arm maze. <i>Neuron</i>. 2019;101(1):119-132.e4. doi:<a href="https://doi.org/10.1016/j.neuron.2018.11.015">10.1016/j.neuron.2018.11.015</a>
  apa: Xu, H., Baracskay, P., O’Neill, J., &#38; Csicsvari, J. L. (2019). Assembly
    responses of hippocampal CA1 place cells predict learned behavior in goal-directed
    spatial tasks on the radial eight-arm maze. <i>Neuron</i>. Elsevier. <a href="https://doi.org/10.1016/j.neuron.2018.11.015">https://doi.org/10.1016/j.neuron.2018.11.015</a>
  chicago: Xu, Haibing, Peter Baracskay, Joseph O’Neill, and Jozsef L Csicsvari. “Assembly
    Responses of Hippocampal CA1 Place Cells Predict Learned Behavior in Goal-Directed
    Spatial Tasks on the Radial Eight-Arm Maze.” <i>Neuron</i>. Elsevier, 2019. <a
    href="https://doi.org/10.1016/j.neuron.2018.11.015">https://doi.org/10.1016/j.neuron.2018.11.015</a>.
  ieee: H. Xu, P. Baracskay, J. O’Neill, and J. L. Csicsvari, “Assembly responses
    of hippocampal CA1 place cells predict learned behavior in goal-directed spatial
    tasks on the radial eight-arm maze,” <i>Neuron</i>, vol. 101, no. 1. Elsevier,
    p. 119–132.e4, 2019.
  ista: Xu H, Baracskay P, O’Neill J, Csicsvari JL. 2019. Assembly responses of hippocampal
    CA1 place cells predict learned behavior in goal-directed spatial tasks on the
    radial eight-arm maze. Neuron. 101(1), 119–132.e4.
  mla: Xu, Haibing, et al. “Assembly Responses of Hippocampal CA1 Place Cells Predict
    Learned Behavior in Goal-Directed Spatial Tasks on the Radial Eight-Arm Maze.”
    <i>Neuron</i>, vol. 101, no. 1, Elsevier, 2019, p. 119–132.e4, doi:<a href="https://doi.org/10.1016/j.neuron.2018.11.015">10.1016/j.neuron.2018.11.015</a>.
  short: H. Xu, P. Baracskay, J. O’Neill, J.L. Csicsvari, Neuron 101 (2019) 119–132.e4.
date_created: 2019-01-13T22:59:10Z
date_published: 2019-01-02T00:00:00Z
date_updated: 2023-09-07T12:06:37Z
day: '02'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2018.11.015
ec_funded: 1
external_id:
  isi:
  - '000454791500014'
intvolume: '       101'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.doi.org/10.1016/j.neuron.2018.11.015
month: '01'
oa: 1
oa_version: Published Version
page: 119-132.e4
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
publication: Neuron
publication_identifier:
  issn:
  - '10974199'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/reading-rats-minds/
  record:
  - id: '837'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Assembly responses of hippocampal CA1 place cells predict learned behavior
  in goal-directed spatial tasks on the radial eight-arm maze
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 101
year: '2019'
...
---
_id: '5949'
abstract:
- lang: eng
  text: Aberrant proteostasis of protein aggregation may lead to behavior disorders
    including chronic mental illnesses (CMI). Furthermore, the neuronal activity alterations
    that underlie CMI are not well understood. We recorded the local field potential
    and single-unit activity of the hippocampal CA1 region in vivo in rats transgenically
    overexpressing the Disrupted-in-Schizophrenia 1 (DISC1) gene (tgDISC1), modeling
    sporadic CMI. These tgDISC1 rats have previously been shown to exhibit DISC1 protein
    aggregation, disturbances in the dopaminergic system and attention-related deficits.
    Recordings were performed during exploration of familiar and novel open field
    environments and during sleep, allowing investigation of neuronal abnormalities
    in unconstrained behavior. Compared to controls, tgDISC1 place cells exhibited
    smaller place fields and decreased speed-modulation of their firing rates, demonstrating
    altered spatial coding and deficits in encoding location-independent sensory inputs.
    Oscillation analyses showed that tgDISC1 pyramidal neurons had higher theta phase
    locking strength during novelty, limiting their phase coding ability. However,
    their mean theta phases were more variable at the population level, reducing oscillatory
    network synchronization. Finally, tgDISC1 pyramidal neurons showed a lack of novelty-induced
    shift in their preferred theta and gamma firing phases, indicating deficits in
    coding of novel environments with oscillatory firing. By combining single cell
    and neuronal population analyses, we link DISC1 protein pathology with abnormal
    hippocampal neural coding and network synchrony, and thereby gain a more comprehensive
    understanding of CMI mechanisms.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Karola
  full_name: Käfer, Karola
  id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
  last_name: Käfer
- first_name: Hugo
  full_name: Malagon-Vina, Hugo
  last_name: Malagon-Vina
- first_name: Desiree
  full_name: Dickerson, Desiree
  id: 444EB89E-F248-11E8-B48F-1D18A9856A87
  last_name: Dickerson
- first_name: Joseph
  full_name: O'Neill, Joseph
  last_name: O'Neill
- first_name: Svenja V.
  full_name: Trossbach, Svenja V.
  last_name: Trossbach
- first_name: Carsten
  full_name: Korth, Carsten
  last_name: Korth
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Käfer K, Malagon-Vina H, Dickerson D, et al. Disrupted-in-schizophrenia 1 overexpression
    disrupts hippocampal coding and oscillatory synchronization. <i>Hippocampus</i>.
    2019;29(9):802-816. doi:<a href="https://doi.org/10.1002/hipo.23076">10.1002/hipo.23076</a>
  apa: Käfer, K., Malagon-Vina, H., Dickerson, D., O’Neill, J., Trossbach, S. V.,
    Korth, C., &#38; Csicsvari, J. L. (2019). Disrupted-in-schizophrenia 1 overexpression
    disrupts hippocampal coding and oscillatory synchronization. <i>Hippocampus</i>.
    Wiley. <a href="https://doi.org/10.1002/hipo.23076">https://doi.org/10.1002/hipo.23076</a>
  chicago: Käfer, Karola, Hugo Malagon-Vina, Desiree Dickerson, Joseph O’Neill, Svenja
    V. Trossbach, Carsten Korth, and Jozsef L Csicsvari. “Disrupted-in-Schizophrenia
    1 Overexpression Disrupts Hippocampal Coding and Oscillatory Synchronization.”
    <i>Hippocampus</i>. Wiley, 2019. <a href="https://doi.org/10.1002/hipo.23076">https://doi.org/10.1002/hipo.23076</a>.
  ieee: K. Käfer <i>et al.</i>, “Disrupted-in-schizophrenia 1 overexpression disrupts
    hippocampal coding and oscillatory synchronization,” <i>Hippocampus</i>, vol.
    29, no. 9. Wiley, pp. 802–816, 2019.
  ista: Käfer K, Malagon-Vina H, Dickerson D, O’Neill J, Trossbach SV, Korth C, Csicsvari
    JL. 2019. Disrupted-in-schizophrenia 1 overexpression disrupts hippocampal coding
    and oscillatory synchronization. Hippocampus. 29(9), 802–816.
  mla: Käfer, Karola, et al. “Disrupted-in-Schizophrenia 1 Overexpression Disrupts
    Hippocampal Coding and Oscillatory Synchronization.” <i>Hippocampus</i>, vol.
    29, no. 9, Wiley, 2019, pp. 802–16, doi:<a href="https://doi.org/10.1002/hipo.23076">10.1002/hipo.23076</a>.
  short: K. Käfer, H. Malagon-Vina, D. Dickerson, J. O’Neill, S.V. Trossbach, C. Korth,
    J.L. Csicsvari, Hippocampus 29 (2019) 802–816.
date_created: 2019-02-10T22:59:18Z
date_published: 2019-09-01T00:00:00Z
date_updated: 2024-03-25T23:30:11Z
day: '01'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1002/hipo.23076
ec_funded: 1
external_id:
  isi:
  - '000480635400003'
file:
- access_level: open_access
  checksum: 5e8de271ca04aef92a5de42d6aac4404
  content_type: application/pdf
  creator: dernst
  date_created: 2019-02-11T10:42:51Z
  date_updated: 2020-07-14T12:47:13Z
  file_id: '5950'
  file_name: 2019_Hippocampus_Kaefer.pdf
  file_size: 2132893
  relation: main_file
file_date_updated: 2020-07-14T12:47:13Z
has_accepted_license: '1'
intvolume: '        29'
isi: 1
issue: '9'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 802-816
project:
- _id: 257BBB4C-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '607616'
  name: Inter-and intracellular signalling in schizophrenia
publication: Hippocampus
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
  record:
  - id: '6825'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Disrupted-in-schizophrenia 1 overexpression disrupts hippocampal coding and
  oscillatory synchronization
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 29
year: '2019'
...
---
_id: '6194'
abstract:
- lang: eng
  text: Grid cells with their rigid hexagonal firing fields are thought to provide
    an invariant metric to the hippocampal cognitive map, yet environmental geometrical
    features have recently been shown to distort the grid structure. Given that the
    hippocampal role goes beyond space, we tested the influence of nonspatial information
    on the grid organization. We trained rats to daily learn three new reward locations
    on a cheeseboard maze while recording from the medial entorhinal cortex and the
    hippocampal CA1 region. Many grid fields moved toward goal location, leading to
    long-lasting deformations of the entorhinal map. Therefore, distortions in the
    grid structure contribute to goal representation during both learning and recall,
    which demonstrates that grid cells participate in mnemonic coding and do not merely
    provide a simple metric of space.
article_processing_charge: No
article_type: original
author:
- first_name: Charlotte N.
  full_name: Boccara, Charlotte N.
  id: 3FC06552-F248-11E8-B48F-1D18A9856A87
  last_name: Boccara
  orcid: 0000-0001-7237-5109
- first_name: Michele
  full_name: Nardin, Michele
  id: 30BD0376-F248-11E8-B48F-1D18A9856A87
  last_name: Nardin
  orcid: 0000-0001-8849-6570
- first_name: Federico
  full_name: Stella, Federico
  id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
  last_name: Stella
  orcid: 0000-0001-9439-3148
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Boccara CN, Nardin M, Stella F, O’Neill J, Csicsvari JL. The entorhinal cognitive
    map is attracted to goals. <i>Science</i>. 2019;363(6434):1443-1447. doi:<a href="https://doi.org/10.1126/science.aav4837">10.1126/science.aav4837</a>
  apa: Boccara, C. N., Nardin, M., Stella, F., O’Neill, J., &#38; Csicsvari, J. L.
    (2019). The entorhinal cognitive map is attracted to goals. <i>Science</i>. American
    Association for the Advancement of Science. <a href="https://doi.org/10.1126/science.aav4837">https://doi.org/10.1126/science.aav4837</a>
  chicago: Boccara, Charlotte N., Michele Nardin, Federico Stella, Joseph O’Neill,
    and Jozsef L Csicsvari. “The Entorhinal Cognitive Map Is Attracted to Goals.”
    <i>Science</i>. American Association for the Advancement of Science, 2019. <a
    href="https://doi.org/10.1126/science.aav4837">https://doi.org/10.1126/science.aav4837</a>.
  ieee: C. N. Boccara, M. Nardin, F. Stella, J. O’Neill, and J. L. Csicsvari, “The
    entorhinal cognitive map is attracted to goals,” <i>Science</i>, vol. 363, no.
    6434. American Association for the Advancement of Science, pp. 1443–1447, 2019.
  ista: Boccara CN, Nardin M, Stella F, O’Neill J, Csicsvari JL. 2019. The entorhinal
    cognitive map is attracted to goals. Science. 363(6434), 1443–1447.
  mla: Boccara, Charlotte N., et al. “The Entorhinal Cognitive Map Is Attracted to
    Goals.” <i>Science</i>, vol. 363, no. 6434, American Association for the Advancement
    of Science, 2019, pp. 1443–47, doi:<a href="https://doi.org/10.1126/science.aav4837">10.1126/science.aav4837</a>.
  short: C.N. Boccara, M. Nardin, F. Stella, J. O’Neill, J.L. Csicsvari, Science 363
    (2019) 1443–1447.
date_created: 2019-04-04T08:39:30Z
date_published: 2019-03-29T00:00:00Z
date_updated: 2024-03-25T23:30:09Z
day: '29'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1126/science.aav4837
ec_funded: 1
external_id:
  isi:
  - '000462738000034'
file:
- access_level: open_access
  checksum: 5e6b16742cde10a560cfaf2130764da1
  content_type: application/pdf
  creator: dernst
  date_created: 2020-05-14T09:11:10Z
  date_updated: 2020-07-14T12:47:23Z
  file_id: '7826'
  file_name: 2019_Science_Boccara.pdf
  file_size: 9045923
  relation: main_file
file_date_updated: 2020-07-14T12:47:23Z
has_accepted_license: '1'
intvolume: '       363'
isi: 1
issue: '6434'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Submitted Version
page: 1443-1447
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Science
publication_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/grid-cells-create-treasure-map-in-rat-brain/
  record:
  - id: '6062'
    relation: popular_science
    status: public
  - id: '11932'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: The entorhinal cognitive map is attracted to goals
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 363
year: '2019'
...
---
_id: '6338'
abstract:
- lang: eng
  text: Hippocampal activity patterns representing movement trajectories are reactivated
    in immobility and sleep periods, a process associated with memory recall, consolidation,
    and decision making. It is thought that only fixed, behaviorally relevant patterns
    can be reactivated, which are stored across hippocampal synaptic connections.
    To test whether some generalized rules govern reactivation, we examined trajectory
    reactivation following non-stereotypical exploration of familiar open-field environments.
    We found that random trajectories of varying lengths and timescales were reactivated,
    resembling that of Brownian motion of particles. The animals’ behavioral trajectory
    did not follow Brownian diffusion demonstrating that the exact behavioral experience
    is not reactivated. Therefore, hippocampal circuits are able to generate random
    trajectories of any recently active map by following diffusion dynamics. This
    ability of hippocampal circuits to generate representations of all behavioral
    outcome combinations, experienced or not, may underlie a wide variety of hippocampal-dependent
    cognitive functions such as learning, generalization, and planning.
article_processing_charge: No
article_type: original
author:
- first_name: Federico
  full_name: Stella, Federico
  id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
  last_name: Stella
  orcid: 0000-0001-9439-3148
- first_name: Peter
  full_name: Baracskay, Peter
  id: 361CC00E-F248-11E8-B48F-1D18A9856A87
  last_name: Baracskay
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Stella F, Baracskay P, O’Neill J, Csicsvari JL. Hippocampal reactivation of
    random trajectories resembling Brownian diffusion. <i>Neuron</i>. 2019;102:450-461.
    doi:<a href="https://doi.org/10.1016/j.neuron.2019.01.052">10.1016/j.neuron.2019.01.052</a>
  apa: Stella, F., Baracskay, P., O’Neill, J., &#38; Csicsvari, J. L. (2019). Hippocampal
    reactivation of random trajectories resembling Brownian diffusion. <i>Neuron</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.neuron.2019.01.052">https://doi.org/10.1016/j.neuron.2019.01.052</a>
  chicago: Stella, Federico, Peter Baracskay, Joseph O’Neill, and Jozsef L Csicsvari.
    “Hippocampal Reactivation of Random Trajectories Resembling Brownian Diffusion.”
    <i>Neuron</i>. Elsevier, 2019. <a href="https://doi.org/10.1016/j.neuron.2019.01.052">https://doi.org/10.1016/j.neuron.2019.01.052</a>.
  ieee: F. Stella, P. Baracskay, J. O’Neill, and J. L. Csicsvari, “Hippocampal reactivation
    of random trajectories resembling Brownian diffusion,” <i>Neuron</i>, vol. 102.
    Elsevier, pp. 450–461, 2019.
  ista: Stella F, Baracskay P, O’Neill J, Csicsvari JL. 2019. Hippocampal reactivation
    of random trajectories resembling Brownian diffusion. Neuron. 102, 450–461.
  mla: Stella, Federico, et al. “Hippocampal Reactivation of Random Trajectories Resembling
    Brownian Diffusion.” <i>Neuron</i>, vol. 102, Elsevier, 2019, pp. 450–61, doi:<a
    href="https://doi.org/10.1016/j.neuron.2019.01.052">10.1016/j.neuron.2019.01.052</a>.
  short: F. Stella, P. Baracskay, J. O’Neill, J.L. Csicsvari, Neuron 102 (2019) 450–461.
date_created: 2019-04-17T08:28:59Z
date_published: 2019-04-17T00:00:00Z
date_updated: 2023-08-25T10:13:07Z
day: '17'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2019.01.052
ec_funded: 1
external_id:
  isi:
  - '000465169700017'
  pmid:
  - '30819547'
intvolume: '       102'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.neuron.2019.01.052
month: '04'
oa: 1
oa_version: Published Version
page: 450-461
pmid: 1
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
- _id: 2654F984-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I03713
  name: Interneuro Plasticity During Spatial Learning
publication: Neuron
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/memories-of-movement-are-replayed-randomly-during-sleep/
scopus_import: '1'
status: public
title: Hippocampal reactivation of random trajectories resembling Brownian diffusion
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 102
year: '2019'
...
---
_id: '5914'
abstract:
- lang: eng
  text: With the advent of optogenetics, it became possible to change the activity
    of a targeted population of neurons in a temporally controlled manner. To combine
    the advantages of 60-channel in vivo tetrode recording and laser-based optogenetics,
    we have developed a closed-loop recording system that allows for the actual electrophysiological
    signal to be used as a trigger for the laser light mediating the optogenetic intervention.
    We have optimized the weight, size, and shape of the corresponding implant to
    make it compatible with the size, force, and movements of a behaving mouse, and
    we have shown that the system can efficiently block sharp wave ripple (SWR) events
    using those events themselves as a trigger. To demonstrate the full potential
    of the optogenetic recording system we present a pilot study addressing the contribution
    of SWR events to learning in a complex behavioral task.
article_number: e0087
article_processing_charge: No
author:
- first_name: Dámaris K
  full_name: Rangel Guerrero, Dámaris K
  id: 4871BCE6-F248-11E8-B48F-1D18A9856A87
  last_name: Rangel Guerrero
  orcid: 0000-0002-8602-4374
- first_name: James G.
  full_name: Donnett, James G.
  last_name: Donnett
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Krisztián
  full_name: Kovács, Krisztián
  id: 2AB5821E-F248-11E8-B48F-1D18A9856A87
  last_name: Kovács
  orcid: 0000-0001-6251-1007
citation:
  ama: 'Rangel Guerrero DK, Donnett JG, Csicsvari JL, Kovács K. Tetrode recording
    from the hippocampus of behaving mice coupled with four-point-irradiation closed-loop
    optogenetics: A technique to study the contribution of Hippocampal SWR events
    to learning. <i>eNeuro</i>. 2018;5(4). doi:<a href="https://doi.org/10.1523/ENEURO.0087-18.2018">10.1523/ENEURO.0087-18.2018</a>'
  apa: 'Rangel Guerrero, D. K., Donnett, J. G., Csicsvari, J. L., &#38; Kovács, K.
    (2018). Tetrode recording from the hippocampus of behaving mice coupled with four-point-irradiation
    closed-loop optogenetics: A technique to study the contribution of Hippocampal
    SWR events to learning. <i>ENeuro</i>. Society of Neuroscience. <a href="https://doi.org/10.1523/ENEURO.0087-18.2018">https://doi.org/10.1523/ENEURO.0087-18.2018</a>'
  chicago: 'Rangel Guerrero, Dámaris K, James G. Donnett, Jozsef L Csicsvari, and
    Krisztián Kovács. “Tetrode Recording from the Hippocampus of Behaving Mice Coupled
    with Four-Point-Irradiation Closed-Loop Optogenetics: A Technique to Study the
    Contribution of Hippocampal SWR Events to Learning.” <i>ENeuro</i>. Society of
    Neuroscience, 2018. <a href="https://doi.org/10.1523/ENEURO.0087-18.2018">https://doi.org/10.1523/ENEURO.0087-18.2018</a>.'
  ieee: 'D. K. Rangel Guerrero, J. G. Donnett, J. L. Csicsvari, and K. Kovács, “Tetrode
    recording from the hippocampus of behaving mice coupled with four-point-irradiation
    closed-loop optogenetics: A technique to study the contribution of Hippocampal
    SWR events to learning,” <i>eNeuro</i>, vol. 5, no. 4. Society of Neuroscience,
    2018.'
  ista: 'Rangel Guerrero DK, Donnett JG, Csicsvari JL, Kovács K. 2018. Tetrode recording
    from the hippocampus of behaving mice coupled with four-point-irradiation closed-loop
    optogenetics: A technique to study the contribution of Hippocampal SWR events
    to learning. eNeuro. 5(4), e0087.'
  mla: 'Rangel Guerrero, Dámaris K., et al. “Tetrode Recording from the Hippocampus
    of Behaving Mice Coupled with Four-Point-Irradiation Closed-Loop Optogenetics:
    A Technique to Study the Contribution of Hippocampal SWR Events to Learning.”
    <i>ENeuro</i>, vol. 5, no. 4, e0087, Society of Neuroscience, 2018, doi:<a href="https://doi.org/10.1523/ENEURO.0087-18.2018">10.1523/ENEURO.0087-18.2018</a>.'
  short: D.K. Rangel Guerrero, J.G. Donnett, J.L. Csicsvari, K. Kovács, ENeuro 5 (2018).
date_created: 2019-02-03T22:59:16Z
date_published: 2018-07-27T00:00:00Z
date_updated: 2024-03-25T23:30:06Z
day: '27'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1523/ENEURO.0087-18.2018
ec_funded: 1
external_id:
  isi:
  - '000443994700007'
file:
- access_level: open_access
  checksum: f4915d45fc7ad4648b7b7a13fdecca01
  content_type: application/pdf
  creator: dernst
  date_created: 2019-02-05T12:48:36Z
  date_updated: 2020-07-14T12:47:13Z
  file_id: '5921'
  file_name: 2018_ENeuro_Guerrero.pdf
  file_size: 3746884
  relation: main_file
file_date_updated: 2020-07-14T12:47:13Z
has_accepted_license: '1'
intvolume: '         5'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 257D4372-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I2072-B27
  name: Interneuron plasticity during spatial learning
publication: eNeuro
publication_status: published
publisher: Society of Neuroscience
quality_controlled: '1'
related_material:
  record:
  - id: '6849'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: 'Tetrode recording from the hippocampus of behaving mice coupled with four-point-irradiation
  closed-loop optogenetics: A technique to study the contribution of Hippocampal SWR
  events to learning'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 5
year: '2018'
...
---
_id: '1118'
abstract:
- lang: eng
  text: Sharp wave-ripple (SWR) oscillations play a key role in memory consolidation
    during non-rapid eye movement sleep, immobility, and consummatory behavior. However,
    whether temporally modulated synaptic excitation or inhibition underlies the ripples
    is controversial. To address this question, we performed simultaneous recordings
    of excitatory and inhibitory postsynaptic currents (EPSCs and IPSCs) and local
    field potentials (LFPs) in the CA1 region of awake mice in vivo. During SWRs,
    inhibition dominated over excitation, with a peak conductance ratio of 4.1 ± 0.5.
    Furthermore, the amplitude of SWR-associated IPSCs was positively correlated with
    SWR magnitude, whereas that of EPSCs was not. Finally, phase analysis indicated
    that IPSCs were phase-locked to individual ripple cycles, whereas EPSCs were uniformly
    distributed in phase space. Optogenetic inhibition indicated that PV+ interneurons
    provided a major contribution to SWR-associated IPSCs. Thus, phasic inhibition,
    but not excitation, shapes SWR oscillations in the hippocampal CA1 region in vivo.
acknowledged_ssus:
- _id: M-Shop
- _id: ScienComp
- _id: PreCl
article_processing_charge: No
author:
- first_name: Jian
  full_name: Gan, Jian
  id: 3614E438-F248-11E8-B48F-1D18A9856A87
  last_name: Gan
- first_name: Shih-Ming
  full_name: Weng, Shih-Ming
  id: 2F9C5AC8-F248-11E8-B48F-1D18A9856A87
  last_name: Weng
- first_name: Alejandro
  full_name: Pernia-Andrade, Alejandro
  id: 36963E98-F248-11E8-B48F-1D18A9856A87
  last_name: Pernia-Andrade
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Gan J, Weng S-M, Pernia-Andrade A, Csicsvari JL, Jonas PM. Phase-locked inhibition,
    but not excitation, underlies hippocampal ripple oscillations in awake mice in
    vivo. <i>Neuron</i>. 2017;93(2):308-314. doi:<a href="https://doi.org/10.1016/j.neuron.2016.12.018">10.1016/j.neuron.2016.12.018</a>
  apa: Gan, J., Weng, S.-M., Pernia-Andrade, A., Csicsvari, J. L., &#38; Jonas, P.
    M. (2017). Phase-locked inhibition, but not excitation, underlies hippocampal
    ripple oscillations in awake mice in vivo. <i>Neuron</i>. Elsevier. <a href="https://doi.org/10.1016/j.neuron.2016.12.018">https://doi.org/10.1016/j.neuron.2016.12.018</a>
  chicago: Gan, Jian, Shih-Ming Weng, Alejandro Pernia-Andrade, Jozsef L Csicsvari,
    and Peter M Jonas. “Phase-Locked Inhibition, but Not Excitation, Underlies Hippocampal
    Ripple Oscillations in Awake Mice in Vivo.” <i>Neuron</i>. Elsevier, 2017. <a
    href="https://doi.org/10.1016/j.neuron.2016.12.018">https://doi.org/10.1016/j.neuron.2016.12.018</a>.
  ieee: J. Gan, S.-M. Weng, A. Pernia-Andrade, J. L. Csicsvari, and P. M. Jonas, “Phase-locked
    inhibition, but not excitation, underlies hippocampal ripple oscillations in awake
    mice in vivo,” <i>Neuron</i>, vol. 93, no. 2. Elsevier, pp. 308–314, 2017.
  ista: Gan J, Weng S-M, Pernia-Andrade A, Csicsvari JL, Jonas PM. 2017. Phase-locked
    inhibition, but not excitation, underlies hippocampal ripple oscillations in awake
    mice in vivo. Neuron. 93(2), 308–314.
  mla: Gan, Jian, et al. “Phase-Locked Inhibition, but Not Excitation, Underlies Hippocampal
    Ripple Oscillations in Awake Mice in Vivo.” <i>Neuron</i>, vol. 93, no. 2, Elsevier,
    2017, pp. 308–14, doi:<a href="https://doi.org/10.1016/j.neuron.2016.12.018">10.1016/j.neuron.2016.12.018</a>.
  short: J. Gan, S.-M. Weng, A. Pernia-Andrade, J.L. Csicsvari, P.M. Jonas, Neuron
    93 (2017) 308–314.
date_created: 2018-12-11T11:50:15Z
date_published: 2017-01-18T00:00:00Z
date_updated: 2023-09-20T11:31:48Z
day: '18'
ddc:
- '571'
department:
- _id: PeJo
- _id: JoCs
doi: 10.1016/j.neuron.2016.12.018
ec_funded: 1
external_id:
  isi:
  - '000396428200010'
file:
- access_level: open_access
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:08:56Z
  date_updated: 2018-12-12T10:08:56Z
  file_id: '4719'
  file_name: IST-2017-752-v1+1_1-s2.0-S0896627316309606-main.pdf
  file_size: 2738950
  relation: main_file
file_date_updated: 2018-12-12T10:08:56Z
has_accepted_license: '1'
intvolume: '        93'
isi: 1
issue: '2'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 308 - 314
project:
- _id: 25C26B1E-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P24909-B24
  name: Mechanisms of transmitter release at GABAergic synapses
- _id: 25C0F108-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '268548'
  name: Nanophysiology of fast-spiking, parvalbumin-expressing GABAergic interneurons
publication: Neuron
publication_status: published
publisher: Elsevier
publist_id: '6244'
pubrep_id: '752'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Phase-locked inhibition, but not excitation, underlies hippocampal ripple oscillations
  in awake mice in vivo
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 93
year: '2017'
...
---
_id: '1132'
abstract:
- lang: eng
  text: The hippocampus is thought to initiate systems-wide mnemonic processes through
    the reactivation of previously acquired spatial and episodic memory traces, which
    can recruit the entorhinal cortex as a first stage of memory redistribution to
    other brain areas. Hippocampal reactivation occurs during sharp wave-ripples,
    in which synchronous network firing encodes sequences of places.We investigated
    the coordination of this replay by recording assembly activity simultaneously
    in the CA1 region of the hippocampus and superficial layers of the medial entorhinal
    cortex. We found that entorhinal cell assemblies can replay trajectories independently
    of the hippocampus and sharp wave-ripples. This suggests that the hippocampus
    is not the sole initiator of spatial and episodic memory trace reactivation. Memory
    systems involved in these processes may include nonhierarchical, parallel components.
article_processing_charge: No
author:
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Charlotte
  full_name: Boccara, Charlotte
  id: 3FC06552-F248-11E8-B48F-1D18A9856A87
  last_name: Boccara
  orcid: 0000-0001-7237-5109
- first_name: Federico
  full_name: Stella, Federico
  id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
  last_name: Stella
  orcid: 0000-0001-9439-3148
- first_name: Philipp
  full_name: Schönenberger, Philipp
  id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
  last_name: Schönenberger
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: O’Neill J, Boccara CN, Stella F, Schönenberger P, Csicsvari JL. Superficial
    layers of the medial entorhinal cortex replay independently of the hippocampus.
    <i>Science</i>. 2017;355(6321):184-188. doi:<a href="https://doi.org/10.1126/science.aag2787">10.1126/science.aag2787</a>
  apa: O’Neill, J., Boccara, C. N., Stella, F., Schönenberger, P., &#38; Csicsvari,
    J. L. (2017). Superficial layers of the medial entorhinal cortex replay independently
    of the hippocampus. <i>Science</i>. American Association for the Advancement of
    Science. <a href="https://doi.org/10.1126/science.aag2787">https://doi.org/10.1126/science.aag2787</a>
  chicago: O’Neill, Joseph, Charlotte N. Boccara, Federico Stella, Philipp Schönenberger,
    and Jozsef L Csicsvari. “Superficial Layers of the Medial Entorhinal Cortex Replay
    Independently of the Hippocampus.” <i>Science</i>. American Association for the
    Advancement of Science, 2017. <a href="https://doi.org/10.1126/science.aag2787">https://doi.org/10.1126/science.aag2787</a>.
  ieee: J. O’Neill, C. N. Boccara, F. Stella, P. Schönenberger, and J. L. Csicsvari,
    “Superficial layers of the medial entorhinal cortex replay independently of the
    hippocampus,” <i>Science</i>, vol. 355, no. 6321. American Association for the
    Advancement of Science, pp. 184–188, 2017.
  ista: O’Neill J, Boccara CN, Stella F, Schönenberger P, Csicsvari JL. 2017. Superficial
    layers of the medial entorhinal cortex replay independently of the hippocampus.
    Science. 355(6321), 184–188.
  mla: O’Neill, Joseph, et al. “Superficial Layers of the Medial Entorhinal Cortex
    Replay Independently of the Hippocampus.” <i>Science</i>, vol. 355, no. 6321,
    American Association for the Advancement of Science, 2017, pp. 184–88, doi:<a
    href="https://doi.org/10.1126/science.aag2787">10.1126/science.aag2787</a>.
  short: J. O’Neill, C.N. Boccara, F. Stella, P. Schönenberger, J.L. Csicsvari, Science
    355 (2017) 184–188.
date_created: 2018-12-11T11:50:19Z
date_published: 2017-01-13T00:00:00Z
date_updated: 2023-09-20T11:30:35Z
day: '13'
ddc:
- '571'
department:
- _id: JoCs
doi: 10.1126/science.aag2787
ec_funded: 1
external_id:
  isi:
  - '000391743700044'
file:
- access_level: open_access
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:10:22Z
  date_updated: 2018-12-12T10:10:22Z
  file_id: '4809'
  file_name: IST-2018-976-v1+1_2017Preprint_ONeill_Superficial_layers.pdf
  file_size: 3761201
  relation: main_file
file_date_updated: 2018-12-12T10:10:22Z
has_accepted_license: '1'
intvolume: '       355'
isi: 1
issue: '6321'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 184 - 188
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
publication: Science
publication_identifier:
  issn:
  - '00368075'
publication_status: published
publisher: American Association for the Advancement of Science
publist_id: '6226'
pubrep_id: '976'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superficial layers of the medial entorhinal cortex replay independently of
  the hippocampus
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 355
year: '2017'
...
---
_id: '1334'
abstract:
- lang: eng
  text: Hippocampal neurons encode a cognitive map of space. These maps are thought
    to be updated during learning and in response to changes in the environment through
    activity-dependent synaptic plasticity. Here we examine how changes in activity
    influence spatial coding in rats using halorhodopsin-mediated, spatially selective
    optogenetic silencing. Halorhoposin stimulation leads to light-induced suppression
    in many place cells and interneurons; some place cells increase their firing through
    disinhibition, whereas some show no effect. We find that place fields of the unaffected
    subpopulation remain stable. On the other hand, place fields of suppressed place
    cells were unstable, showing remapping across sessions before and after optogenetic
    inhibition. Disinhibited place cells had stable maps but sustained an elevated
    firing rate. These findings suggest that place representation in the hippocampus
    is constantly governed by activity-dependent processes, and that disinhibition
    may provide a mechanism for rate remapping.
article_number: '11824'
author:
- first_name: Philipp
  full_name: Schönenberger, Philipp
  id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
  last_name: Schönenberger
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Schönenberger P, O’Neill J, Csicsvari JL. Activity dependent plasticity of
    hippocampal place maps. <i>Nature Communications</i>. 2016;7. doi:<a href="https://doi.org/10.1038/ncomms11824">10.1038/ncomms11824</a>
  apa: Schönenberger, P., O’Neill, J., &#38; Csicsvari, J. L. (2016). Activity dependent
    plasticity of hippocampal place maps. <i>Nature Communications</i>. Nature Publishing
    Group. <a href="https://doi.org/10.1038/ncomms11824">https://doi.org/10.1038/ncomms11824</a>
  chicago: Schönenberger, Philipp, Joseph O’Neill, and Jozsef L Csicsvari. “Activity
    Dependent Plasticity of Hippocampal Place Maps.” <i>Nature Communications</i>.
    Nature Publishing Group, 2016. <a href="https://doi.org/10.1038/ncomms11824">https://doi.org/10.1038/ncomms11824</a>.
  ieee: P. Schönenberger, J. O’Neill, and J. L. Csicsvari, “Activity dependent plasticity
    of hippocampal place maps,” <i>Nature Communications</i>, vol. 7. Nature Publishing
    Group, 2016.
  ista: Schönenberger P, O’Neill J, Csicsvari JL. 2016. Activity dependent plasticity
    of hippocampal place maps. Nature Communications. 7, 11824.
  mla: Schönenberger, Philipp, et al. “Activity Dependent Plasticity of Hippocampal
    Place Maps.” <i>Nature Communications</i>, vol. 7, 11824, Nature Publishing Group,
    2016, doi:<a href="https://doi.org/10.1038/ncomms11824">10.1038/ncomms11824</a>.
  short: P. Schönenberger, J. O’Neill, J.L. Csicsvari, Nature Communications 7 (2016).
date_created: 2018-12-11T11:51:26Z
date_published: 2016-06-10T00:00:00Z
date_updated: 2021-01-12T06:49:57Z
day: '10'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1038/ncomms11824
ec_funded: 1
file:
- access_level: open_access
  checksum: e43307754abe65b840a21939fe163618
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:16:10Z
  date_updated: 2020-07-14T12:44:44Z
  file_id: '5196'
  file_name: IST-2016-660-v1+1_ncomms11824.pdf
  file_size: 1793846
  relation: main_file
file_date_updated: 2020-07-14T12:44:44Z
has_accepted_license: '1'
intvolume: '         7'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
- _id: 257D4372-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I2072-B27
  name: Interneuron plasticity during spatial learning
publication: Nature Communications
publication_status: published
publisher: Nature Publishing Group
publist_id: '5934'
pubrep_id: '660'
quality_controlled: '1'
scopus_import: 1
status: public
title: Activity dependent plasticity of hippocampal place maps
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2016'
...
---
_id: '1279'
abstract:
- lang: eng
  text: During hippocampal sharp wave/ripple (SWR) events, previously occurring, sensory
    inputdriven neuronal firing patterns are replayed. Such replay is thought to be
    important for plasticity- related processes and consolidation of memory traces.
    It has previously been shown that the electrical stimulation-induced disruption
    of SWR events interferes with learning in rodents in different experimental paradigms.
    On the other hand, the cognitive map theory posits that the plastic changes of
    the firing of hippocampal place cells constitute the electrophysiological counterpart
    of the spatial learning, observable at the behavioral level. Therefore, we tested
    whether intact SWR events occurring during the sleep/rest session after the first
    exploration of a novel environment are needed for the stabilization of the CA1
    code, which process requires plasticity. We found that the newly-formed representation
    in the CA1 has the same level of stability with optogenetic SWR blockade as with
    a control manipulation that delivered the same amount of light into the brain.
    Therefore our results suggest that at least in the case of passive exploratory
    behavior, SWR-related plasticity is dispensable for the stability of CA1 ensembles.
acknowledgement: 'The research leading to these results has received funding from
  the People Programme (Marie Curie Actions) of the European Union''s Seventh Framework
  Programme (FP7/2007-2013) under REA grant agreement n° [291734] via the IST FELLOWSHIP
  awarded to Dr. Krisztián A. Kovács and the European Research Council starting grant
  (acronym: HIPECMEM Project reference: 281511) awarded to Dr. Jozsef Csicsvari. We
  thank Lauri Viljanto for technical help in building the ripple detector.'
article_number: e0164675
author:
- first_name: Krisztián
  full_name: Kovács, Krisztián
  id: 2AB5821E-F248-11E8-B48F-1D18A9856A87
  last_name: Kovács
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Philipp
  full_name: Schönenberger, Philipp
  id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
  last_name: Schönenberger
- first_name: Markku
  full_name: Penttonen, Markku
  last_name: Penttonen
- first_name: Dámaris K
  full_name: Rangel Guerrero, Dámaris K
  id: 4871BCE6-F248-11E8-B48F-1D18A9856A87
  last_name: Rangel Guerrero
  orcid: 0000-0002-8602-4374
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Kovács K, O’Neill J, Schönenberger P, Penttonen M, Rangel Guerrero DK, Csicsvari
    JL. Optogenetically blocking sharp wave ripple events in sleep does not interfere
    with the formation of stable spatial representation in the CA1 area of the hippocampus.
    <i>PLoS One</i>. 2016;11(10). doi:<a href="https://doi.org/10.1371/journal.pone.0164675">10.1371/journal.pone.0164675</a>
  apa: Kovács, K., O’Neill, J., Schönenberger, P., Penttonen, M., Rangel Guerrero,
    D. K., &#38; Csicsvari, J. L. (2016). Optogenetically blocking sharp wave ripple
    events in sleep does not interfere with the formation of stable spatial representation
    in the CA1 area of the hippocampus. <i>PLoS One</i>. Public Library of Science.
    <a href="https://doi.org/10.1371/journal.pone.0164675">https://doi.org/10.1371/journal.pone.0164675</a>
  chicago: Kovács, Krisztián, Joseph O’Neill, Philipp Schönenberger, Markku Penttonen,
    Dámaris K Rangel Guerrero, and Jozsef L Csicsvari. “Optogenetically Blocking Sharp
    Wave Ripple Events in Sleep Does Not Interfere with the Formation of Stable Spatial
    Representation in the CA1 Area of the Hippocampus.” <i>PLoS One</i>. Public Library
    of Science, 2016. <a href="https://doi.org/10.1371/journal.pone.0164675">https://doi.org/10.1371/journal.pone.0164675</a>.
  ieee: K. Kovács, J. O’Neill, P. Schönenberger, M. Penttonen, D. K. Rangel Guerrero,
    and J. L. Csicsvari, “Optogenetically blocking sharp wave ripple events in sleep
    does not interfere with the formation of stable spatial representation in the
    CA1 area of the hippocampus,” <i>PLoS One</i>, vol. 11, no. 10. Public Library
    of Science, 2016.
  ista: Kovács K, O’Neill J, Schönenberger P, Penttonen M, Rangel Guerrero DK, Csicsvari
    JL. 2016. Optogenetically blocking sharp wave ripple events in sleep does not
    interfere with the formation of stable spatial representation in the CA1 area
    of the hippocampus. PLoS One. 11(10), e0164675.
  mla: Kovács, Krisztián, et al. “Optogenetically Blocking Sharp Wave Ripple Events
    in Sleep Does Not Interfere with the Formation of Stable Spatial Representation
    in the CA1 Area of the Hippocampus.” <i>PLoS One</i>, vol. 11, no. 10, e0164675,
    Public Library of Science, 2016, doi:<a href="https://doi.org/10.1371/journal.pone.0164675">10.1371/journal.pone.0164675</a>.
  short: K. Kovács, J. O’Neill, P. Schönenberger, M. Penttonen, D.K. Rangel Guerrero,
    J.L. Csicsvari, PLoS One 11 (2016).
date_created: 2018-12-11T11:51:06Z
date_published: 2016-10-19T00:00:00Z
date_updated: 2021-01-12T06:49:35Z
day: '19'
ddc:
- '570'
- '571'
department:
- _id: JoCs
doi: 10.1371/journal.pone.0164675
ec_funded: 1
file:
- access_level: open_access
  checksum: 395895ecb2216e9c39135abaa56b28b3
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:13:26Z
  date_updated: 2020-07-14T12:44:42Z
  file_id: '5009'
  file_name: IST-2016-690-v1+1_journal.pone.0164675.PDF
  file_size: 4353592
  relation: main_file
file_date_updated: 2020-07-14T12:44:42Z
has_accepted_license: '1'
intvolume: '        11'
issue: '10'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 257A4776-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281511'
  name: Memory-related information processing in neuronal circuits of the hippocampus
    and entorhinal cortex
publication: PLoS One
publication_status: published
publisher: Public Library of Science
publist_id: '6037'
pubrep_id: '690'
quality_controlled: '1'
scopus_import: 1
status: public
title: Optogenetically blocking sharp wave ripple events in sleep does not interfere
  with the formation of stable spatial representation in the CA1 area of the hippocampus
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2016'
...
---
_id: '2003'
abstract:
- lang: eng
  text: Learning can be facilitated by previous knowledge when it is organized into
    relational representations forming schemas. In this issue of Neuron, McKenzie
    et al. (2014) demonstrate that the hippocampus rapidly forms interrelated, hierarchical
    memory representations to support schema-based learning.
author:
- first_name: Joseph
  full_name: O'Neill, Joseph
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: O’Neill J, Csicsvari JL. Learning by example in the hippocampus. <i>Neuron</i>.
    2014;83(1):8-10. doi:<a href="https://doi.org/10.1016/j.neuron.2014.06.013">10.1016/j.neuron.2014.06.013</a>
  apa: O’Neill, J., &#38; Csicsvari, J. L. (2014). Learning by example in the hippocampus.
    <i>Neuron</i>. Elsevier. <a href="https://doi.org/10.1016/j.neuron.2014.06.013">https://doi.org/10.1016/j.neuron.2014.06.013</a>
  chicago: O’Neill, Joseph, and Jozsef L Csicsvari. “Learning by Example in the Hippocampus.”
    <i>Neuron</i>. Elsevier, 2014. <a href="https://doi.org/10.1016/j.neuron.2014.06.013">https://doi.org/10.1016/j.neuron.2014.06.013</a>.
  ieee: J. O’Neill and J. L. Csicsvari, “Learning by example in the hippocampus,”
    <i>Neuron</i>, vol. 83, no. 1. Elsevier, pp. 8–10, 2014.
  ista: O’Neill J, Csicsvari JL. 2014. Learning by example in the hippocampus. Neuron.
    83(1), 8–10.
  mla: O’Neill, Joseph, and Jozsef L. Csicsvari. “Learning by Example in the Hippocampus.”
    <i>Neuron</i>, vol. 83, no. 1, Elsevier, 2014, pp. 8–10, doi:<a href="https://doi.org/10.1016/j.neuron.2014.06.013">10.1016/j.neuron.2014.06.013</a>.
  short: J. O’Neill, J.L. Csicsvari, Neuron 83 (2014) 8–10.
date_created: 2018-12-11T11:55:09Z
date_published: 2014-07-02T00:00:00Z
date_updated: 2021-01-12T06:54:39Z
day: '02'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2014.06.013
intvolume: '        83'
issue: '1'
language:
- iso: eng
month: '07'
oa_version: None
page: 8 - 10
publication: Neuron
publication_status: published
publisher: Elsevier
publist_id: '5073'
quality_controlled: '1'
scopus_import: 1
status: public
title: Learning by example in the hippocampus
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 83
year: '2014'
...
---
_id: '2005'
abstract:
- lang: eng
  text: By eliciting a natural exploratory behavior in rats, head scanning, a study
    reveals that hippocampal place cells form new, stable firing fields in those locations
    where the behavior has just occurred.
author:
- first_name: David
  full_name: Dupret, David
  last_name: Dupret
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Dupret D, Csicsvari JL. Turning heads to remember places. <i>Nature Neuroscience</i>.
    2014;17(5):643-644. doi:<a href="https://doi.org/10.1038/nn.3700">10.1038/nn.3700</a>
  apa: Dupret, D., &#38; Csicsvari, J. L. (2014). Turning heads to remember places.
    <i>Nature Neuroscience</i>. Nature Publishing Group. <a href="https://doi.org/10.1038/nn.3700">https://doi.org/10.1038/nn.3700</a>
  chicago: Dupret, David, and Jozsef L Csicsvari. “Turning Heads to Remember Places.”
    <i>Nature Neuroscience</i>. Nature Publishing Group, 2014. <a href="https://doi.org/10.1038/nn.3700">https://doi.org/10.1038/nn.3700</a>.
  ieee: D. Dupret and J. L. Csicsvari, “Turning heads to remember places,” <i>Nature
    Neuroscience</i>, vol. 17, no. 5. Nature Publishing Group, pp. 643–644, 2014.
  ista: Dupret D, Csicsvari JL. 2014. Turning heads to remember places. Nature Neuroscience.
    17(5), 643–644.
  mla: Dupret, David, and Jozsef L. Csicsvari. “Turning Heads to Remember Places.”
    <i>Nature Neuroscience</i>, vol. 17, no. 5, Nature Publishing Group, 2014, pp.
    643–44, doi:<a href="https://doi.org/10.1038/nn.3700">10.1038/nn.3700</a>.
  short: D. Dupret, J.L. Csicsvari, Nature Neuroscience 17 (2014) 643–644.
date_created: 2018-12-11T11:55:09Z
date_published: 2014-04-25T00:00:00Z
date_updated: 2021-01-12T06:54:40Z
day: '25'
department:
- _id: JoCs
doi: 10.1038/nn.3700
intvolume: '        17'
issue: '5'
language:
- iso: eng
month: '04'
oa_version: None
page: 643 - 644
publication: Nature Neuroscience
publication_status: published
publisher: Nature Publishing Group
publist_id: '5071'
quality_controlled: '1'
scopus_import: 1
status: public
title: Turning heads to remember places
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2014'
...
