---
_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:
- access_level: open_access
  checksum: 6a7b0543c440f4c000a1864e69377d95
  content_type: application/pdf
  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: '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: '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: '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: '2860'
abstract:
- lang: eng
  text: 'In the hippocampus, cell assemblies forming mnemonic representations of space
    are thought to arise as a result of changes in functional connections of pyramidal
    cells. We have found that CA1 interneuron circuits are also reconfigured during
    goal-oriented spatial learning through modification of inputs from pyramidal cells.
    As learning progressed, new pyramidal assemblies expressed in theta cycles alternated
    with previously established ones, and eventually overtook them. The firing patterns
    of interneurons developed a relationship to new, learning-related assemblies:
    some interneurons associated their activity with new pyramidal assemblies while
    some others dissociated from them. These firing associations were explained by
    changes in the weight of monosynaptic inputs received by interneurons from new
    pyramidal assemblies, as these predicted the associational changes. Spatial learning
    thus engages circuit modifications in the hippocampus that incorporate a redistribution
    of inhibitory activity that might assist in the segregation of competing pyramidal
    cell assembly patterns in space and time.'
acknowledgement: D.D. and J.C. were supported by a MRC Intramural Programme Grant
  U138197111
author:
- first_name: David
  full_name: Dupret, David
  last_name: Dupret
- 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: Dupret D, O’Neill J, Csicsvari JL. Dynamic reconfiguration of hippocampal interneuron
    circuits during spatial learning. <i>Neuron</i>. 2013;78(1):166-180. doi:<a href="https://doi.org/10.1016/j.neuron.2013.01.033">10.1016/j.neuron.2013.01.033</a>
  apa: Dupret, D., O’Neill, J., &#38; Csicsvari, J. L. (2013). Dynamic reconfiguration
    of hippocampal interneuron circuits during spatial learning. <i>Neuron</i>. Elsevier.
    <a href="https://doi.org/10.1016/j.neuron.2013.01.033">https://doi.org/10.1016/j.neuron.2013.01.033</a>
  chicago: Dupret, David, Joseph O’Neill, and Jozsef L Csicsvari. “Dynamic Reconfiguration
    of Hippocampal Interneuron Circuits during Spatial Learning.” <i>Neuron</i>. Elsevier,
    2013. <a href="https://doi.org/10.1016/j.neuron.2013.01.033">https://doi.org/10.1016/j.neuron.2013.01.033</a>.
  ieee: D. Dupret, J. O’Neill, and J. L. Csicsvari, “Dynamic reconfiguration of hippocampal
    interneuron circuits during spatial learning,” <i>Neuron</i>, vol. 78, no. 1.
    Elsevier, pp. 166–180, 2013.
  ista: Dupret D, O’Neill J, Csicsvari JL. 2013. Dynamic reconfiguration of hippocampal
    interneuron circuits during spatial learning. Neuron. 78(1), 166–180.
  mla: Dupret, David, et al. “Dynamic Reconfiguration of Hippocampal Interneuron Circuits
    during Spatial Learning.” <i>Neuron</i>, vol. 78, no. 1, Elsevier, 2013, pp. 166–80,
    doi:<a href="https://doi.org/10.1016/j.neuron.2013.01.033">10.1016/j.neuron.2013.01.033</a>.
  short: D. Dupret, J. O’Neill, J.L. Csicsvari, Neuron 78 (2013) 166–180.
date_created: 2018-12-11T11:59:59Z
date_published: 2013-03-21T00:00:00Z
date_updated: 2021-01-12T07:00:19Z
day: '21'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2013.01.033
ec_funded: 1
file:
- access_level: open_access
  checksum: 0e18cb8561153ddb50bb5af16e7c9e97
  content_type: application/pdf
  creator: dernst
  date_created: 2019-01-23T08:08:07Z
  date_updated: 2020-07-14T12:45:52Z
  file_id: '5877'
  file_name: 2013_Neuron_Dupret.pdf
  file_size: 2637837
  relation: main_file
file_date_updated: 2020-07-14T12:45:52Z
has_accepted_license: '1'
intvolume: '        78'
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 166 - 180
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_status: published
publisher: Elsevier
publist_id: '3929'
quality_controlled: '1'
scopus_import: 1
status: public
title: Dynamic reconfiguration of hippocampal interneuron circuits during spatial
  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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 78
year: '2013'
...
---
_id: '3441'
abstract:
- lang: eng
  text: The hippocampus is an important brain circuit for spatial memory and the spatially
    selective spiking of hippocampal neuronal assemblies is thought to provide a mnemonic
    representation of space. We found that remembering newly learnt goal locations
    required NMDA receptorĝ€&quot;dependent stabilization and enhanced reactivation
    of goal-related hippocampal assemblies. During spatial learning, place-related
    firing patterns in the CA1, but not CA3, region of the rat hippocampus were reorganized
    to represent new goal locations. Such reorganization did not occur when goals
    were marked by visual cues. The stabilization and successful retrieval of these
    newly acquired CA1 representations of behaviorally relevant places was NMDAR dependent
    and necessary for subsequent memory retention performance. Goal-related assembly
    patterns associated with sharp wave/ripple network oscillations, during both learning
    and subsequent rest periods, predicted memory performance. Together, these results
    suggest that the reorganization and reactivation of assembly firing patterns in
    the hippocampus represent the formation and expression of new spatial memory traces.
    © 2010 Nature America, Inc. All rights reserved.
acknowledgement: |
  Discussed in the News and Views section of the journal by Jeffery and Cacucci
author:
- first_name: David
  full_name: Dupret, David
  last_name: Dupret
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Barty
  full_name: Pleydell-Bouverie, Barty
  last_name: Pleydell Bouverie
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Dupret D, O’Neill J, Pleydell Bouverie B, Csicsvari JL. The reorganization
    and reactivation of hippocampal maps predict spatial memory performance. <i>Nature
    Neuroscience</i>. 2010;13(8):995-1002. doi:<a href="https://doi.org/10.1038/nn.2599">10.1038/nn.2599</a>
  apa: Dupret, D., O’Neill, J., Pleydell Bouverie, B., &#38; Csicsvari, J. L. (2010).
    The reorganization and reactivation of hippocampal maps predict spatial memory
    performance. <i>Nature Neuroscience</i>. Nature Publishing Group. <a href="https://doi.org/10.1038/nn.2599">https://doi.org/10.1038/nn.2599</a>
  chicago: Dupret, David, Joseph O’Neill, Barty Pleydell Bouverie, and Jozsef L Csicsvari.
    “The Reorganization and Reactivation of Hippocampal Maps Predict Spatial Memory
    Performance.” <i>Nature Neuroscience</i>. Nature Publishing Group, 2010. <a href="https://doi.org/10.1038/nn.2599">https://doi.org/10.1038/nn.2599</a>.
  ieee: D. Dupret, J. O’Neill, B. Pleydell Bouverie, and J. L. Csicsvari, “The reorganization
    and reactivation of hippocampal maps predict spatial memory performance,” <i>Nature
    Neuroscience</i>, vol. 13, no. 8. Nature Publishing Group, pp. 995–1002, 2010.
  ista: Dupret D, O’Neill J, Pleydell Bouverie B, Csicsvari JL. 2010. The reorganization
    and reactivation of hippocampal maps predict spatial memory performance. Nature
    Neuroscience. 13(8), 995–1002.
  mla: Dupret, David, et al. “The Reorganization and Reactivation of Hippocampal Maps
    Predict Spatial Memory Performance.” <i>Nature Neuroscience</i>, vol. 13, no.
    8, Nature Publishing Group, 2010, pp. 995–1002, doi:<a href="https://doi.org/10.1038/nn.2599">10.1038/nn.2599</a>.
  short: D. Dupret, J. O’Neill, B. Pleydell Bouverie, J.L. Csicsvari, Nature Neuroscience
    13 (2010) 995–1002.
date_created: 2018-12-11T12:03:21Z
date_published: 2010-08-01T00:00:00Z
date_updated: 2021-01-12T07:43:29Z
day: '01'
doi: 10.1038/nn.2599
extern: 1
intvolume: '        13'
issue: '8'
month: '08'
page: 995 - 1002
publication: Nature Neuroscience
publication_status: published
publisher: Nature Publishing Group
publist_id: '2946'
quality_controlled: 0
status: public
title: The reorganization and reactivation of hippocampal maps predict spatial memory
  performance
type: journal_article
volume: 13
year: '2010'
...
---
_id: '3442'
abstract:
- lang: eng
  text: Episodic and spatial memories each involve the encoding of complex associations
    in hippocampal neuronal circuits. Such memory traces could be stabilised from
    short- to long-term forms by consolidation processes involving the 'reactivation'
    of the original network firing patterns during sleep and rest. Waking experience
    can be replayed in many different brain areas, but an important role for the hippocampus
    lies in the organisation of the 'reactivation' process. Emerging evidence suggests
    that sharp wave/ripple (SWR) events in the hippocampus could coordinate the reactivation
    of memory traces and direct their reinstatement in cortical circuits. Although
    the mechanisms remain uncertain, there is a growing consensus that such SWR-directed
    reactivation of brain-wide memory traces could underlie memory consolidation.
    © 2010 Elsevier Ltd.
author:
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Barty
  full_name: Pleydell-Bouverie, Barty
  last_name: Pleydell Bouverie
- first_name: David
  full_name: Dupret, David
  last_name: Dupret
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: 'O’Neill J, Pleydell Bouverie B, Dupret D, Csicsvari JL. Play it again: reactivation
    of waking experience and memory. <i>Trends in Neurosciences</i>. 2010;33(5):220-229.
    doi:<a href="https://doi.org/10.1016/j.tins.2010.01.006">10.1016/j.tins.2010.01.006</a>'
  apa: 'O’Neill, J., Pleydell Bouverie, B., Dupret, D., &#38; Csicsvari, J. L. (2010).
    Play it again: reactivation of waking experience and memory. <i>Trends in Neurosciences</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.tins.2010.01.006">https://doi.org/10.1016/j.tins.2010.01.006</a>'
  chicago: 'O’Neill, Joseph, Barty Pleydell Bouverie, David Dupret, and Jozsef L Csicsvari.
    “Play It Again: Reactivation of Waking Experience and Memory.” <i>Trends in Neurosciences</i>.
    Elsevier, 2010. <a href="https://doi.org/10.1016/j.tins.2010.01.006">https://doi.org/10.1016/j.tins.2010.01.006</a>.'
  ieee: 'J. O’Neill, B. Pleydell Bouverie, D. Dupret, and J. L. Csicsvari, “Play it
    again: reactivation of waking experience and memory,” <i>Trends in Neurosciences</i>,
    vol. 33, no. 5. Elsevier, pp. 220–229, 2010.'
  ista: 'O’Neill J, Pleydell Bouverie B, Dupret D, Csicsvari JL. 2010. Play it again:
    reactivation of waking experience and memory. Trends in Neurosciences. 33(5),
    220–229.'
  mla: 'O’Neill, Joseph, et al. “Play It Again: Reactivation of Waking Experience
    and Memory.” <i>Trends in Neurosciences</i>, vol. 33, no. 5, Elsevier, 2010, pp.
    220–29, doi:<a href="https://doi.org/10.1016/j.tins.2010.01.006">10.1016/j.tins.2010.01.006</a>.'
  short: J. O’Neill, B. Pleydell Bouverie, D. Dupret, J.L. Csicsvari, Trends in Neurosciences
    33 (2010) 220–229.
date_created: 2018-12-11T12:03:21Z
date_published: 2010-05-01T00:00:00Z
date_updated: 2021-01-12T07:43:29Z
day: '01'
doi: 10.1016/j.tins.2010.01.006
extern: 1
intvolume: '        33'
issue: '5'
month: '05'
page: 220 - 229
publication: Trends in Neurosciences
publication_status: published
publisher: Elsevier
publist_id: '2945'
quality_controlled: 0
status: public
title: 'Play it again: reactivation of waking experience and memory'
type: journal_article
volume: 33
year: '2010'
...
---
_id: '3520'
abstract:
- lang: eng
  text: The hippocampus is thought to be involved in episodic memory formation by
    reactivating traces of waking experience during sleep. Indeed, the joint firing
    of spatially tuned pyramidal cells encoding nearby places recur during sleep.
    We found that the sleep cofiring of rat CA1 pyramidal cells encoding similar places
    increased relative to the sleep session before exploration. This cofiring increase
    depended on the number of times that cells fired together with short latencies
    ( &lt; 50 ms) during exploration, and was strongest between cells representing
    the most visited places. This is indicative of a Hebbian learning rule in which
    changes in firing associations between cells are determined by the number of waking
    coincident firing events. In contrast, cells encoding different locations reduced
    their cofiring in proportion to the number of times that they fired independently.
    Together these data indicate that reactivated patterns are shaped by both positive
    and negative changes in cofiring, which are determined by recent behavior.
author:
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Timothy
  full_name: Senior,Timothy J
  last_name: Senior
- first_name: Kevin
  full_name: Allen, Kevin
  last_name: Allen
- first_name: John
  full_name: Huxter,John R
  last_name: Huxter
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: O’Neill J, Senior T, Allen K, Huxter J, Csicsvari JL. Reactivation of experience-dependent
    cell assembly patterns in the hippocampus. <i>Nature Neuroscience</i>. 2008;11(2):209-215.
    doi:<a href="https://doi.org/10.1038/nn2037">10.1038/nn2037</a>
  apa: O’Neill, J., Senior, T., Allen, K., Huxter, J., &#38; Csicsvari, J. L. (2008).
    Reactivation of experience-dependent cell assembly patterns in the hippocampus.
    <i>Nature Neuroscience</i>. Nature Publishing Group. <a href="https://doi.org/10.1038/nn2037">https://doi.org/10.1038/nn2037</a>
  chicago: O’Neill, Joseph, Timothy Senior, Kevin Allen, John Huxter, and Jozsef L
    Csicsvari. “Reactivation of Experience-Dependent Cell Assembly Patterns in the
    Hippocampus.” <i>Nature Neuroscience</i>. Nature Publishing Group, 2008. <a href="https://doi.org/10.1038/nn2037">https://doi.org/10.1038/nn2037</a>.
  ieee: J. O’Neill, T. Senior, K. Allen, J. Huxter, and J. L. Csicsvari, “Reactivation
    of experience-dependent cell assembly patterns in the hippocampus,” <i>Nature
    Neuroscience</i>, vol. 11, no. 2. Nature Publishing Group, pp. 209–215, 2008.
  ista: O’Neill J, Senior T, Allen K, Huxter J, Csicsvari JL. 2008. Reactivation of
    experience-dependent cell assembly patterns in the hippocampus. Nature Neuroscience.
    11(2), 209–215.
  mla: O’Neill, Joseph, et al. “Reactivation of Experience-Dependent Cell Assembly
    Patterns in the Hippocampus.” <i>Nature Neuroscience</i>, vol. 11, no. 2, Nature
    Publishing Group, 2008, pp. 209–15, doi:<a href="https://doi.org/10.1038/nn2037">10.1038/nn2037</a>.
  short: J. O’Neill, T. Senior, K. Allen, J. Huxter, J.L. Csicsvari, Nature Neuroscience
    11 (2008) 209–215.
date_created: 2018-12-11T12:03:46Z
date_published: 2008-02-01T00:00:00Z
date_updated: 2021-01-12T07:44:02Z
day: '01'
doi: 10.1038/nn2037
extern: 1
intvolume: '        11'
issue: '2'
month: '02'
page: 209 - 215
publication: Nature Neuroscience
publication_status: published
publisher: Nature Publishing Group
publist_id: '2864'
quality_controlled: 0
status: public
title: Reactivation of experience-dependent cell assembly patterns in the hippocampus
type: journal_article
volume: 11
year: '2008'
...
---
_id: '3537'
abstract:
- lang: eng
  text: 'Hippocampal place cells that fire together within the same cycle of theta
    oscillations represent the sequence of positions (movement trajectory) that a
    rat traverses on a linear track. Furthermore, it has been suggested that the encoding
    of these and other types of temporal memory sequences is organized by gamma oscillations
    nested within theta oscillations. Here, we examined whether gamma-related firing
    of place cells permits such discrete temporal coding. We found that gamma-modulated
    CA1 pyramidal cells separated into two classes on the basis of gamma firing phases
    during waking theta periods. These groups also differed in terms of their spike
    waveforms, firing rates, and burst firing tendency. During gamma oscillations
    one group''s firing became restricted to theta phases associated with the highest
    gamma power. Consequently, on the linear track, cells in this group often failed
    to fire early in theta-phase precession (as the rat entered the place field) if
    gamma oscillations were present. The second group fired throughout the theta cycle
    during gamma oscillations, and maintained gamma-modulated firing at different
    stages of theta-phase precession. Our results suggest that the two different pyramidal
    cell classes may support different types of population codes within a theta cycle:
    one in which spike sequences representing movement trajectories occur across subsequent
    gamma cycles nested within each theta cycle, and another in which firing in synchronized
    gamma discharges without temporal sequences encode a representation of location.
    We propose that gamma oscillations during theta-phase precession organize the
    mnemonic recall of population patterns representing places and movement paths.'
author:
- first_name: Timothy
  full_name: Senior,Timothy J
  last_name: Senior
- first_name: John
  full_name: Huxter,John R
  last_name: Huxter
- first_name: Kevin
  full_name: Allen, Kevin
  last_name: Allen
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: Senior T, Huxter J, Allen K, O’Neill J, Csicsvari JL. Gamma oscillatory firing
    reveals distinct populations of pyramidal cells in the CA1 region of the hippocampus.
    <i>Journal of Neuroscience</i>. 2008;28(9):2274-2286. doi:<a href="https://doi.org/10.1523/JNEUROSCI.4669-07.2008">10.1523/JNEUROSCI.4669-07.2008</a>
  apa: Senior, T., Huxter, J., Allen, K., O’Neill, J., &#38; Csicsvari, J. L. (2008).
    Gamma oscillatory firing reveals distinct populations of pyramidal cells in the
    CA1 region of the hippocampus. <i>Journal of Neuroscience</i>. Society for Neuroscience.
    <a href="https://doi.org/10.1523/JNEUROSCI.4669-07.2008">https://doi.org/10.1523/JNEUROSCI.4669-07.2008</a>
  chicago: Senior, Timothy, John Huxter, Kevin Allen, Joseph O’Neill, and Jozsef L
    Csicsvari. “Gamma Oscillatory Firing Reveals Distinct Populations of Pyramidal
    Cells in the CA1 Region of the Hippocampus.” <i>Journal of Neuroscience</i>. Society
    for Neuroscience, 2008. <a href="https://doi.org/10.1523/JNEUROSCI.4669-07.2008">https://doi.org/10.1523/JNEUROSCI.4669-07.2008</a>.
  ieee: T. Senior, J. Huxter, K. Allen, J. O’Neill, and J. L. Csicsvari, “Gamma oscillatory
    firing reveals distinct populations of pyramidal cells in the CA1 region of the
    hippocampus,” <i>Journal of Neuroscience</i>, vol. 28, no. 9. Society for Neuroscience,
    pp. 2274–2286, 2008.
  ista: Senior T, Huxter J, Allen K, O’Neill J, Csicsvari JL. 2008. Gamma oscillatory
    firing reveals distinct populations of pyramidal cells in the CA1 region of the
    hippocampus. Journal of Neuroscience. 28(9), 2274–2286.
  mla: Senior, Timothy, et al. “Gamma Oscillatory Firing Reveals Distinct Populations
    of Pyramidal Cells in the CA1 Region of the Hippocampus.” <i>Journal of Neuroscience</i>,
    vol. 28, no. 9, Society for Neuroscience, 2008, pp. 2274–86, doi:<a href="https://doi.org/10.1523/JNEUROSCI.4669-07.2008">10.1523/JNEUROSCI.4669-07.2008</a>.
  short: T. Senior, J. Huxter, K. Allen, J. O’Neill, J.L. Csicsvari, Journal of Neuroscience
    28 (2008) 2274–2286.
date_created: 2018-12-11T12:03:51Z
date_published: 2008-02-27T00:00:00Z
date_updated: 2021-01-12T07:44:09Z
day: '27'
doi: 10.1523/JNEUROSCI.4669-07.2008
extern: 1
intvolume: '        28'
issue: '9'
month: '02'
page: 2274 - 2286
publication: Journal of Neuroscience
publication_status: published
publisher: Society for Neuroscience
publist_id: '2847'
quality_controlled: 0
status: public
title: Gamma oscillatory firing reveals distinct populations of pyramidal cells in
  the CA1 region of the hippocampus
type: journal_article
volume: 28
year: '2008'
...
---
_id: '3523'
abstract:
- lang: eng
  text: On the linear track, the recent firing sequences of CA1 place cells recur
    during sharp wave/ripple patterns (SWRs) in a reverse temporal order [Foster &amp;
    Wilson (2006) Nature, 440, 680-683]. We have found similar reverse-order reactivation
    during SWRs in open-field exploration where the firing sequence of cells varied
    before each SWR. Both the onset times and the firing patterns of cells showed
    a tendency for reversed sequences during SWRs. These effects were observed for
    SWRs that occurred during exploration, but not for those during longer immobility
    periods. Additionally, reverse reactivation was stronger when it was preceded
    by higher speed (&gt; 5 cm/s) run periods. The trend for reverse-order SWR reactivation
    was not significantly different in familiar and novel environments, even though
    SWR-associated firing rates of both pyramidal cells and interneurons were reduced
    in novel environments as compared with familiar. During exploration-associated
    SWRs (eSWR) place cells retain place-selective firing [O'Neill et al. (2006) Neuron,
    49, 143-155]. Here, we have shown that each cell's firing onset was more delayed
    and firing probability more reduced during eSWRs the further the rat was from
    the middle of the cell's place field; that is, cells receiving less momentary
    place-related excitatory drive fired later during SWR events. However, even controlling
    for place field distance, the recent firing of cells was still significantly correlated
    with SWR reactivation sequences. We therefore propose that both place-related
    drive and the firing history of cells contribute to reverse reactivation during
    eSWRs.
author:
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Kevin
  full_name: Allen, Kevin
  last_name: Allen
- first_name: Timothy
  full_name: Senior,Timothy
  last_name: Senior
citation:
  ama: Csicsvari JL, O’Neill J, Allen K, Senior T. Place-selective firing contributes
    to the reverse-order reactivation of CA1 pyramidal cells during sharp waves in
    open-field exploration. <i>European Journal of Neuroscience</i>. 2007;26(3):704-716.
    doi:<a href="https://doi.org/10.1111/j.1460-9568.2007.05684.x">10.1111/j.1460-9568.2007.05684.x</a>
  apa: Csicsvari, J. L., O’Neill, J., Allen, K., &#38; Senior, T. (2007). Place-selective
    firing contributes to the reverse-order reactivation of CA1 pyramidal cells during
    sharp waves in open-field exploration. <i>European Journal of Neuroscience</i>.
    Wiley-Blackwell. <a href="https://doi.org/10.1111/j.1460-9568.2007.05684.x">https://doi.org/10.1111/j.1460-9568.2007.05684.x</a>
  chicago: Csicsvari, Jozsef L, Joseph O’Neill, Kevin Allen, and Timothy Senior. “Place-Selective
    Firing Contributes to the Reverse-Order Reactivation of CA1 Pyramidal Cells during
    Sharp Waves in Open-Field Exploration.” <i>European Journal of Neuroscience</i>.
    Wiley-Blackwell, 2007. <a href="https://doi.org/10.1111/j.1460-9568.2007.05684.x">https://doi.org/10.1111/j.1460-9568.2007.05684.x</a>.
  ieee: J. L. Csicsvari, J. O’Neill, K. Allen, and T. Senior, “Place-selective firing
    contributes to the reverse-order reactivation of CA1 pyramidal cells during sharp
    waves in open-field exploration,” <i>European Journal of Neuroscience</i>, vol.
    26, no. 3. Wiley-Blackwell, pp. 704–716, 2007.
  ista: Csicsvari JL, O’Neill J, Allen K, Senior T. 2007. Place-selective firing contributes
    to the reverse-order reactivation of CA1 pyramidal cells during sharp waves in
    open-field exploration. European Journal of Neuroscience. 26(3), 704–716.
  mla: Csicsvari, Jozsef L., et al. “Place-Selective Firing Contributes to the Reverse-Order
    Reactivation of CA1 Pyramidal Cells during Sharp Waves in Open-Field Exploration.”
    <i>European Journal of Neuroscience</i>, vol. 26, no. 3, Wiley-Blackwell, 2007,
    pp. 704–16, doi:<a href="https://doi.org/10.1111/j.1460-9568.2007.05684.x">10.1111/j.1460-9568.2007.05684.x</a>.
  short: J.L. Csicsvari, J. O’Neill, K. Allen, T. Senior, European Journal of Neuroscience
    26 (2007) 704–716.
date_created: 2018-12-11T12:03:46Z
date_published: 2007-08-01T00:00:00Z
date_updated: 2021-01-12T07:44:03Z
day: '01'
doi: 10.1111/j.1460-9568.2007.05684.x
extern: 1
intvolume: '        26'
issue: '3'
month: '08'
page: 704 - 716
publication: European Journal of Neuroscience
publication_status: published
publisher: Wiley-Blackwell
publist_id: '2862'
quality_controlled: 0
status: public
title: Place-selective firing contributes to the reverse-order reactivation of CA1
  pyramidal cells during sharp waves in open-field exploration
type: journal_article
volume: 26
year: '2007'
...
---
_id: '3522'
abstract:
- lang: eng
  text: We observed sharp wave/ripples (SWR) during exploration within brief (&lt;
    2.4 s) interruptions of or during theta oscillations. CA1 network responses of
    SWRs occurring during exploration (eSWR) and SWRs detected in waking immobility
    or sleep were similar. However, neuronal activity during eSWR was location dependent,
    and eSWR-related firing was stronger inside the place field than outside. The
    eSPW-related firing increase was stronger than the baseline increase inside compared
    to outside, suggesting a “supralinear” summation of eSWR and place-selective inputs.
    Pairs of cells with similar place fields and/or correlated firing during exploration
    showed stronger coactivation during eSWRs and subsequent sleep-SWRs. Sequential
    activation of place cells was not required for the reactivation of waking co-firing
    patterns; cell pairs with symmetrical cross-correlations still showed reactivated
    waking co-firing patterns during sleep-SWRs. We suggest that place-selective firing
    during eSWRs facilitates initial associations between cells with similar place
    fields that enable place-related ensemble patterns to recur during subsequent
    sleep-SWRs.
author:
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Timothy
  full_name: Senior,Timothy
  last_name: Senior
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
citation:
  ama: O’Neill J, Senior T, Csicsvari JL. Place-selective firing of CA1 pyramidal
    cells during sharp wave/ripple network patterns in exploratory behavior. <i>Neuron</i>.
    2006;49(1):143-155. doi:<a href="https://doi.org/10.1016/j.neuron.2005.10.037">10.1016/j.neuron.2005.10.037</a>
  apa: O’Neill, J., Senior, T., &#38; Csicsvari, J. L. (2006). Place-selective firing
    of CA1 pyramidal cells during sharp wave/ripple network patterns in exploratory
    behavior. <i>Neuron</i>. Elsevier. <a href="https://doi.org/10.1016/j.neuron.2005.10.037">https://doi.org/10.1016/j.neuron.2005.10.037</a>
  chicago: O’Neill, Joseph, Timothy Senior, and Jozsef L Csicsvari. “Place-Selective
    Firing of CA1 Pyramidal Cells during Sharp Wave/Ripple Network Patterns in Exploratory
    Behavior.” <i>Neuron</i>. Elsevier, 2006. <a href="https://doi.org/10.1016/j.neuron.2005.10.037">https://doi.org/10.1016/j.neuron.2005.10.037</a>.
  ieee: J. O’Neill, T. Senior, and J. L. Csicsvari, “Place-selective firing of CA1
    pyramidal cells during sharp wave/ripple network patterns in exploratory behavior,”
    <i>Neuron</i>, vol. 49, no. 1. Elsevier, pp. 143–155, 2006.
  ista: O’Neill J, Senior T, Csicsvari JL. 2006. Place-selective firing of CA1 pyramidal
    cells during sharp wave/ripple network patterns in exploratory behavior. Neuron.
    49(1), 143–155.
  mla: O’Neill, Joseph, et al. “Place-Selective Firing of CA1 Pyramidal Cells during
    Sharp Wave/Ripple Network Patterns in Exploratory Behavior.” <i>Neuron</i>, vol.
    49, no. 1, Elsevier, 2006, pp. 143–55, doi:<a href="https://doi.org/10.1016/j.neuron.2005.10.037">10.1016/j.neuron.2005.10.037</a>.
  short: J. O’Neill, T. Senior, J.L. Csicsvari, Neuron 49 (2006) 143–155.
date_created: 2018-12-11T12:03:46Z
date_published: 2006-01-05T00:00:00Z
date_updated: 2021-01-12T07:44:03Z
day: '05'
doi: 10.1016/j.neuron.2005.10.037
extern: 1
intvolume: '        49'
issue: '1'
month: '01'
page: 143 - 155
publication: Neuron
publication_status: published
publisher: Elsevier
publist_id: '2863'
quality_controlled: 0
status: public
title: Place-selective firing of CA1 pyramidal cells during sharp wave/ripple network
  patterns in exploratory behavior
type: journal_article
volume: 49
year: '2006'
...
---
_id: '3443'
abstract:
- lang: eng
  text: In the hippocampal CA1 area, a relatively homogenous population of pyramidal
    cells is accompanied by a diversity of GABAergic interneurons. Previously, we
    found that parvalbumin-expressing basket, axo-axonic, bistratified, and oriens-lacunosum
    moleculare cells, innervating different domains of pyramidal cells, have distinct
    firing patterns during network oscillations in vivo. A second family of interneurons,
    expressing cholecystokinin but not parvalbumin, is known to target the same domains
    of pyramidal cells as do the parvalbumin cells. To test the temporal activity
    of these independent and parallel GABAergic inputs, we recorded the precise spike
    timing of identified cholecystokinin interneurons during hippocampal network oscillations
    in anesthetized rats and determined their molecular expression profiles and synaptic
    targets. The cells were cannabinoid receptor type 1 immunopositive. Contrary to
    the stereotyped firing of parvalbumin interneurons, cholecystokinin-expressing
    basket and dendrite-innervating cells discharge, on average, with 1.7 ± 2.0 Hz
    during high-frequency ripple oscillations in an episode-dependent manner. During
    theta oscillations, cholecystokinin- expressing interneurons fire with 8.8 ± 3.3
    Hz at a characteristic time on the ascending phase of theta waves (155 ± 81°),
    when place cells start firing in freely moving animals. The firing patterns of
    some interneurons recorded in drug-free behaving rats were similar to cholecystokinin
    cells in anesthetized animals. Our results demonstrate that cholecystokinin- and
    parvalbumin-expressing interneurons make different contributions to network oscillations
    and play distinct roles in different brain states. We suggest that the specific
    spike timing of cholecystokinin interneurons and their sensitivity to endocannabinoids
    might contribute to differentiate subgroups of pyramidal cells forming neuronal
    assemblies, whereas parvalbumin interneurons contribute to synchronizing the entire
    network. Copyright © 2005 Society for Neuroscience.
author:
- first_name: Thomas
  full_name: Klausberger,Thomas
  last_name: Klausberger
- first_name: Laszlo
  full_name: Marton,Laszlo F
  last_name: Marton
- first_name: Joseph
  full_name: Joseph O'Neill
  id: 426376DC-F248-11E8-B48F-1D18A9856A87
  last_name: O'Neill
- first_name: Jojanneke
  full_name: Huck, Jojanneke H
  last_name: Huck
- first_name: Yannis
  full_name: Dalezios, Yannis
  last_name: Dalezios
- first_name: Pablo
  full_name: Fuentealba,Pablo
  last_name: Fuentealba
- first_name: Wai
  full_name: Suen, Wai Yee
  last_name: Suen
- first_name: Edit
  full_name: Papp, Edit Cs
  last_name: Papp
- first_name: Takeshi
  full_name: Kaneko, Takeshi
  last_name: Kaneko
- first_name: Masahiko
  full_name: Watanabe, Masahiko
  last_name: Watanabe
- first_name: Jozsef L
  full_name: Jozsef Csicsvari
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Péter
  full_name: Somogyi, Péter
  last_name: Somogyi
citation:
  ama: Klausberger T, Marton L, O’Neill J, et al. Complementary roles of cholecystokinin-
    and parvalbumin-expressing GABAergic neurons in hippocampal network oscillations.
    <i>Journal of Neuroscience</i>. 2005;25(42):9782-9793. doi:<a href="https://doi.org/10.1523/JNEUROSCI.3269-05.2005">10.1523/JNEUROSCI.3269-05.2005</a>
  apa: Klausberger, T., Marton, L., O’Neill, J., Huck, J., Dalezios, Y., Fuentealba,
    P., … Somogyi, P. (2005). Complementary roles of cholecystokinin- and parvalbumin-expressing
    GABAergic neurons in hippocampal network oscillations. <i>Journal of Neuroscience</i>.
    Society for Neuroscience. <a href="https://doi.org/10.1523/JNEUROSCI.3269-05.2005">https://doi.org/10.1523/JNEUROSCI.3269-05.2005</a>
  chicago: Klausberger, Thomas, Laszlo Marton, Joseph O’Neill, Jojanneke Huck, Yannis
    Dalezios, Pablo Fuentealba, Wai Suen, et al. “Complementary Roles of Cholecystokinin-
    and Parvalbumin-Expressing GABAergic Neurons in Hippocampal Network Oscillations.”
    <i>Journal of Neuroscience</i>. Society for Neuroscience, 2005. <a href="https://doi.org/10.1523/JNEUROSCI.3269-05.2005">https://doi.org/10.1523/JNEUROSCI.3269-05.2005</a>.
  ieee: T. Klausberger <i>et al.</i>, “Complementary roles of cholecystokinin- and
    parvalbumin-expressing GABAergic neurons in hippocampal network oscillations,”
    <i>Journal of Neuroscience</i>, vol. 25, no. 42. Society for Neuroscience, pp.
    9782–9793, 2005.
  ista: Klausberger T, Marton L, O’Neill J, Huck J, Dalezios Y, Fuentealba P, Suen
    W, Papp E, Kaneko T, Watanabe M, Csicsvari JL, Somogyi P. 2005. Complementary
    roles of cholecystokinin- and parvalbumin-expressing GABAergic neurons in hippocampal
    network oscillations. Journal of Neuroscience. 25(42), 9782–9793.
  mla: Klausberger, Thomas, et al. “Complementary Roles of Cholecystokinin- and Parvalbumin-Expressing
    GABAergic Neurons in Hippocampal Network Oscillations.” <i>Journal of Neuroscience</i>,
    vol. 25, no. 42, Society for Neuroscience, 2005, pp. 9782–93, doi:<a href="https://doi.org/10.1523/JNEUROSCI.3269-05.2005">10.1523/JNEUROSCI.3269-05.2005</a>.
  short: T. Klausberger, L. Marton, J. O’Neill, J. Huck, Y. Dalezios, P. Fuentealba,
    W. Suen, E. Papp, T. Kaneko, M. Watanabe, J.L. Csicsvari, P. Somogyi, Journal
    of Neuroscience 25 (2005) 9782–9793.
date_created: 2018-12-11T12:03:21Z
date_published: 2005-10-19T00:00:00Z
date_updated: 2021-01-12T07:43:30Z
day: '19'
doi: 10.1523/JNEUROSCI.3269-05.2005
extern: 1
intvolume: '        25'
issue: '42'
month: '10'
page: 9782 - 9793
publication: Journal of Neuroscience
publication_status: published
publisher: Society for Neuroscience
publist_id: '2944'
quality_controlled: 0
status: public
title: Complementary roles of cholecystokinin- and parvalbumin-expressing GABAergic
  neurons in hippocampal network oscillations
type: journal_article
volume: 25
year: '2005'
...
