---
_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. Cell Reports.
2023;42(9). doi:10.1016/j.celrep.2023.113015
apa: Nardin, M., Käfer, K., Stella, F., & Csicsvari, J. L. (2023). Theta oscillations
as a substrate for medial prefrontal-hippocampal assembly interactions. Cell
Reports. Elsevier. https://doi.org/10.1016/j.celrep.2023.113015
chicago: Nardin, Michele, Karola Käfer, Federico Stella, and Jozsef L Csicsvari.
“Theta Oscillations as a Substrate for Medial Prefrontal-Hippocampal Assembly
Interactions.” Cell Reports. Elsevier, 2023. https://doi.org/10.1016/j.celrep.2023.113015.
ieee: M. Nardin, K. Käfer, F. Stella, and J. L. Csicsvari, “Theta oscillations as
a substrate for medial prefrontal-hippocampal assembly interactions,” Cell
Reports, 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.” Cell Reports, vol. 42, no. 9, 113015, Elsevier,
2023, doi:10.1016/j.celrep.2023.113015.
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'
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checksum: ca77a304fb813c292550b8604b0fb41d
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date_updated: 2023-09-15T07:12:46Z
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file_size: 4879455
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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:
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...
---
_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. The Journal of Neuroscience.
2023;43(48):8140-8156. doi:10.1523/JNEUROSCI.0194-23.2023
apa: Nardin, M., Csicsvari, J. L., Tkačik, G., & Savin, C. (2023). The structure
of hippocampal CA1 interactions optimizes spatial coding across experience. The
Journal of Neuroscience. Society of Neuroscience. https://doi.org/10.1523/JNEUROSCI.0194-23.2023
chicago: Nardin, Michele, Jozsef L Csicsvari, Gašper Tkačik, and Cristina Savin.
“The Structure of Hippocampal CA1 Interactions Optimizes Spatial Coding across
Experience.” The Journal of Neuroscience. Society of Neuroscience, 2023.
https://doi.org/10.1523/JNEUROSCI.0194-23.2023.
ieee: M. Nardin, J. L. Csicsvari, G. Tkačik, and C. Savin, “The structure of hippocampal
CA1 interactions optimizes spatial coding across experience,” The Journal of
Neuroscience, 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.” The Journal of Neuroscience, vol. 43,
no. 48, Society of Neuroscience, 2023, pp. 8140–56, doi:10.1523/JNEUROSCI.0194-23.2023.
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
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file_name: 2023_JourNeuroscience_Nardin.pdf
file_size: 2280632
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month: '11'
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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: '11932'
abstract:
- lang: eng
text: "The ability to form and retrieve memories is central to survival. In mammals,
the hippocampus\r\nis a brain region essential to the acquisition and consolidation
of new memories. It is also\r\ninvolved in keeping track of one’s position in
space and aids navigation. Although this\r\nspace-memory has been a source of
contradiction, evidence supports the view that the role of\r\nthe hippocampus
in navigation is memory, thanks to the formation of cognitive maps. First\r\nintroduced
by Tolman in 1948, cognitive maps are generally used to organize experiences in\r\nmemory;
however, the detailed mechanisms by which these maps are formed and stored are
not\r\nyet agreed upon. Some influential theories describe this process as involving
three fundamental\r\nsteps: initial encoding by the hippocampus, interactions
between the hippocampus and other\r\ncortical areas, and long-term extra-hippocampal
consolidation. In this thesis, I will show how\r\nthe investigation of cognitive
maps of space helped to shed light on each of these three memory\r\nprocesses.\r\nThe
first study included in this thesis deals with the initial encoding of spatial
memories in\r\nthe hippocampus. Much is known about encoding at the level of single
cells, but less about\r\ntheir co-activity or joint contribution to the encoding
of novel spatial information. I will\r\ndescribe the structure of an interaction
network that allows for efficient encoding of noisy\r\nspatial information during
the first exploration of a novel environment.\r\nThe second study describes the
interactions between the hippocampus and the prefrontal\r\ncortex (PFC), two areas
directly and indirectly connected. It is known that the PFC, in concert\r\nwith
the hippocampus, is involved in various processes, including memory storage and
spatial\r\nnavigation. Nonetheless, the detailed mechanisms by which PFC receives
information from the\r\nhippocampus are not clear. I will show how a transient
improvement in theta phase locking of\r\nPFC cells enables interactions of cell
pairs across the two regions.\r\nThe third study describes the learning of behaviorally-relevant
spatial locations in the hippocampus and the medial entorhinal cortex. I will
show how the accumulation of firing around\r\ngoal locations, a correlate of learning,
can shed light on the transition from short- to long-term\r\nspatial memories
and the speed of consolidation in different brain areas.\r\nThe studies included
in this thesis represent the main scientific contributions of my Ph.D. They\r\ninvolve
statistical analyses and models of neural responses of cells in different brain
areas of\r\nrats executing spatial tasks. I will conclude the thesis by discussing
the impact of the findings\r\non principles of memory formation and retention,
including the mechanisms, the speed, and\r\nthe duration of these processes."
acknowledgement: I acknowledge the support from the European Union’s Horizon 2020
research and innovation program under the Marie Skłodowska-Curie Grant Agreement
No. 665385.
alternative_title:
- ISTA Thesis
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
citation:
ama: Nardin M. On the encoding, transfer, and consolidation of spatial memories.
2022. doi:10.15479/at:ista:11932
apa: Nardin, M. (2022). On the encoding, transfer, and consolidation of spatial
memories. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:11932
chicago: Nardin, Michele. “On the Encoding, Transfer, and Consolidation of Spatial
Memories.” Institute of Science and Technology Austria, 2022. https://doi.org/10.15479/at:ista:11932.
ieee: M. Nardin, “On the encoding, transfer, and consolidation of spatial memories,”
Institute of Science and Technology Austria, 2022.
ista: Nardin M. 2022. On the encoding, transfer, and consolidation of spatial memories.
Institute of Science and Technology Austria.
mla: Nardin, Michele. On the Encoding, Transfer, and Consolidation of Spatial
Memories. Institute of Science and Technology Austria, 2022, doi:10.15479/at:ista:11932.
short: M. Nardin, On the Encoding, Transfer, and Consolidation of Spatial Memories,
Institute of Science and Technology Austria, 2022.
date_created: 2022-08-19T08:52:30Z
date_published: 2022-08-19T00:00:00Z
date_updated: 2023-09-05T12:02:14Z
day: '19'
ddc:
- '573'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoCs
doi: 10.15479/at:ista:11932
ec_funded: 1
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creator: mnardin
date_created: 2022-08-19T16:31:34Z
date_updated: 2023-06-20T22:30:04Z
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project:
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call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication_identifier:
issn:
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publisher: Institute of Science and Technology Austria
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- id: '10077'
relation: part_of_dissertation
status: public
- id: '6194'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Jozsef L
full_name: Csicsvari, Jozsef L
id: 3FA14672-F248-11E8-B48F-1D18A9856A87
last_name: Csicsvari
orcid: 0000-0002-5193-4036
title: On the encoding, transfer, and consolidation of spatial memories
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
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. bioRxiv. doi:10.1101/2021.09.28.460602
apa: Nardin, M., Csicsvari, J. L., Tkačik, G., & Savin, C. (n.d.). The structure
of hippocampal CA1 interactions optimizes spatial coding across experience. bioRxiv.
Cold Spring Harbor Laboratory. https://doi.org/10.1101/2021.09.28.460602
chicago: Nardin, Michele, Jozsef L Csicsvari, Gašper Tkačik, and Cristina Savin.
“The Structure of Hippocampal CA1 Interactions Optimizes Spatial Coding across
Experience.” BioRxiv. Cold Spring Harbor Laboratory, n.d. https://doi.org/10.1101/2021.09.28.460602.
ieee: M. Nardin, J. L. Csicsvari, G. Tkačik, and C. Savin, “The structure of hippocampal
CA1 interactions optimizes spatial coding across experience,” bioRxiv.
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, 10.1101/2021.09.28.460602.
mla: Nardin, Michele, et al. “The Structure of Hippocampal CA1 Interactions Optimizes
Spatial Coding across Experience.” BioRxiv, Cold Spring Harbor Laboratory,
doi:10.1101/2021.09.28.460602.
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:
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relation: dissertation_contains
status: public
status: public
title: The structure of hippocampal CA1 interactions optimizes spatial coding across
experience
tmp:
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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. bioRxiv. doi:10.1101/2021.09.30.462269
apa: Nardin, M., Käfer, K., & Csicsvari, J. L. (n.d.). The generalized spatial
representation in the prefrontal cortex is inherited from the hippocampus. bioRxiv.
Cold Spring Harbor Laboratory. https://doi.org/10.1101/2021.09.30.462269
chicago: Nardin, Michele, Karola Käfer, and Jozsef L Csicsvari. “The Generalized
Spatial Representation in the Prefrontal Cortex Is Inherited from the Hippocampus.”
BioRxiv. Cold Spring Harbor Laboratory, n.d. https://doi.org/10.1101/2021.09.30.462269.
ieee: M. Nardin, K. Käfer, and J. L. Csicsvari, “The generalized spatial representation
in the prefrontal cortex is inherited from the hippocampus,” bioRxiv. 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, 10.1101/2021.09.30.462269.
mla: Nardin, Michele, et al. “The Generalized Spatial Representation in the Prefrontal
Cortex Is Inherited from the Hippocampus.” BioRxiv, Cold Spring Harbor
Laboratory, doi:10.1101/2021.09.30.462269.
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: '10635'
abstract:
- lang: eng
text: The brain efficiently performs nonlinear computations through its intricate
networks of spiking neurons, but how this is done remains elusive. While nonlinear
computations can be implemented successfully in spiking neural networks, this
requires supervised training and the resulting connectivity can be hard to interpret.
In contrast, the required connectivity for any computation in the form of a linear
dynamical system can be directly derived and understood with the spike coding
network (SCN) framework. These networks also have biologically realistic activity
patterns and are highly robust to cell death. Here we extend the SCN framework
to directly implement any polynomial dynamical system, without the need for training.
This results in networks requiring a mix of synapse types (fast, slow, and multiplicative),
which we term multiplicative spike coding networks (mSCNs). Using mSCNs, we demonstrate
how to directly derive the required connectivity for several nonlinear dynamical
systems. We also show how to carry out higher-order polynomials with coupled networks
that use only pair-wise multiplicative synapses, and provide expected numbers
of connections for each synapse type. Overall, our work demonstrates a novel method
for implementing nonlinear computations in spiking neural networks, while keeping
the attractive features of standard SCNs (robustness, realistic activity patterns,
and interpretable connectivity). Finally, we discuss the biological plausibility
of our approach, and how the high accuracy and robustness of the approach may
be of interest for neuromorphic computing.
acknowledgement: "A preprint version of this article has been peer-reviewed and recommended
by Peer Community In Neuroscience (DOI link to the recommendation: https://doi.org/10.24072/pci.cneuro.100003).\r\nWe
thank Christian Machens and Nuno Calaim for useful discussions on the project. This
report\r\ncame out of a collaboration started at the CAJAL Advanced Neuroscience
Training Programme in\r\nComputational Neuroscience in Lisbon, Portugal, during
the 2019 summer. The authors would\r\nlike to thank the participants, TAs, lecturers,
and organizers of the summer school. SWK was\r\nsupported by the Simons Collaboration
on the Global Brain (543009). WFP was supported by\r\nFCT (032077). MN was supported
by European Union Horizon 2020 (665385).\r\n"
article_number: e68
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Michele
full_name: Nardin, Michele
id: 30BD0376-F248-11E8-B48F-1D18A9856A87
last_name: Nardin
orcid: 0000-0001-8849-6570
- first_name: James W.
full_name: Phillips, James W.
last_name: Phillips
- first_name: William F.
full_name: Podlaski, William F.
last_name: Podlaski
- first_name: Sander W.
full_name: Keemink, Sander W.
last_name: Keemink
citation:
ama: Nardin M, Phillips JW, Podlaski WF, Keemink SW. Nonlinear computations in spiking
neural networks through multiplicative synapses. Peer Community Journal.
2021;1. doi:10.24072/pcjournal.69
apa: Nardin, M., Phillips, J. W., Podlaski, W. F., & Keemink, S. W. (2021).
Nonlinear computations in spiking neural networks through multiplicative synapses.
Peer Community Journal. Centre Mersenne ; Peer Community In. https://doi.org/10.24072/pcjournal.69
chicago: Nardin, Michele, James W. Phillips, William F. Podlaski, and Sander W.
Keemink. “Nonlinear Computations in Spiking Neural Networks through Multiplicative
Synapses.” Peer Community Journal. Centre Mersenne ; Peer Community In,
2021. https://doi.org/10.24072/pcjournal.69.
ieee: M. Nardin, J. W. Phillips, W. F. Podlaski, and S. W. Keemink, “Nonlinear computations
in spiking neural networks through multiplicative synapses,” Peer Community
Journal, vol. 1. Centre Mersenne ; Peer Community In, 2021.
ista: Nardin M, Phillips JW, Podlaski WF, Keemink SW. 2021. Nonlinear computations
in spiking neural networks through multiplicative synapses. Peer Community Journal.
1, e68.
mla: Nardin, Michele, et al. “Nonlinear Computations in Spiking Neural Networks
through Multiplicative Synapses.” Peer Community Journal, vol. 1, e68,
Centre Mersenne ; Peer Community In, 2021, doi:10.24072/pcjournal.69.
short: M. Nardin, J.W. Phillips, W.F. Podlaski, S.W. Keemink, Peer Community Journal
1 (2021).
date_created: 2022-01-17T11:12:40Z
date_published: 2021-12-15T00:00:00Z
date_updated: 2022-01-17T13:30:01Z
day: '15'
ddc:
- '519'
department:
- _id: GradSch
- _id: JoCs
doi: 10.24072/pcjournal.69
ec_funded: 1
external_id:
arxiv:
- '2009.03857'
file:
- access_level: open_access
checksum: cd9af6b331918608f2e3d1c7940cbf4f
content_type: application/pdf
creator: mnardin
date_created: 2022-01-17T11:15:26Z
date_updated: 2022-01-17T11:15:26Z
file_id: '10636'
file_name: 10_24072_pcjournal_69.pdf
file_size: 3311494
relation: main_file
success: 1
file_date_updated: 2022-01-17T11:15:26Z
has_accepted_license: '1'
intvolume: ' 1'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Peer Community Journal
publication_identifier:
eissn:
- 2804-3871
publication_status: published
publisher: Centre Mersenne ; Peer Community In
quality_controlled: '1'
status: public
title: Nonlinear computations in spiking neural networks through multiplicative synapses
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: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 1
year: '2021'
...
---
_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. Neuron. 2020;106(1):P154-165.e6.
doi:10.1016/j.neuron.2020.01.015
apa: Käfer, K., Nardin, M., Blahna, K., & Csicsvari, J. L. (2020). Replay of
behavioral sequences in the medial prefrontal cortex during rule switching. Neuron.
Elsevier. https://doi.org/10.1016/j.neuron.2020.01.015
chicago: Käfer, Karola, Michele Nardin, Karel Blahna, and Jozsef L Csicsvari. “Replay
of Behavioral Sequences in the Medial Prefrontal Cortex during Rule Switching.”
Neuron. Elsevier, 2020. https://doi.org/10.1016/j.neuron.2020.01.015.
ieee: K. Käfer, M. Nardin, K. Blahna, and J. L. Csicsvari, “Replay of behavioral
sequences in the medial prefrontal cortex during rule switching,” Neuron,
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.” Neuron, vol. 106, no. 1, Elsevier, 2020,
p. P154–165.e6, doi:10.1016/j.neuron.2020.01.015.
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: '6062'
abstract:
- lang: eng
text: Open the files in Jupyter Notebook (reccomended https://www.anaconda.com/distribution/#download-section
with Python 3.7).
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
citation:
ama: Nardin M. Supplementary Code and Data for the paper “The Entorhinal Cognitive
Map is Attracted to Goals.” 2019. doi:10.15479/AT:ISTA:6062
apa: Nardin, M. (2019). Supplementary Code and Data for the paper “The Entorhinal
Cognitive Map is Attracted to Goals.” Institute of Science and Technology Austria.
https://doi.org/10.15479/AT:ISTA:6062
chicago: Nardin, Michele. “Supplementary Code and Data for the Paper ‘The Entorhinal
Cognitive Map Is Attracted to Goals.’” Institute of Science and Technology Austria,
2019. https://doi.org/10.15479/AT:ISTA:6062.
ieee: M. Nardin, “Supplementary Code and Data for the paper ‘The Entorhinal Cognitive
Map is Attracted to Goals.’” Institute of Science and Technology Austria, 2019.
ista: Nardin M. 2019. Supplementary Code and Data for the paper ‘The Entorhinal
Cognitive Map is Attracted to Goals’, Institute of Science and Technology Austria,
10.15479/AT:ISTA:6062.
mla: Nardin, Michele. Supplementary Code and Data for the Paper “The Entorhinal
Cognitive Map Is Attracted to Goals.” Institute of Science and Technology
Austria, 2019, doi:10.15479/AT:ISTA:6062.
short: M. Nardin, (2019).
date_created: 2019-03-04T14:20:58Z
date_published: 2019-03-29T00:00:00Z
date_updated: 2024-02-21T12:46:04Z
day: '29'
department:
- _id: JoCs
doi: 10.15479/AT:ISTA:6062
file:
- access_level: open_access
checksum: 48e7b9a02939b763417733239522a236
content_type: application/zip
creator: mnardin
date_created: 2019-03-05T09:29:37Z
date_updated: 2020-07-14T12:47:18Z
file_id: '6068'
file_name: Online_data.zip
file_size: 37002186
relation: main_file
title: Data for the paper "The Entorhinal Cognitive Map is Attracted to Goals"
file_date_updated: 2020-07-14T12:47:18Z
has_accepted_license: '1'
month: '03'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '6194'
relation: research_paper
status: public
status: public
title: Supplementary Code and Data for the paper "The Entorhinal Cognitive Map is
Attracted to Goals"
tmp:
image: /images/cc_by_sa.png
legal_code_url: https://creativecommons.org/licenses/by-sa/4.0/legalcode
name: Creative Commons Attribution-ShareAlike 4.0 International Public License (CC
BY-SA 4.0)
short: CC BY-SA (4.0)
type: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
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. Science. 2019;363(6434):1443-1447. doi:10.1126/science.aav4837
apa: Boccara, C. N., Nardin, M., Stella, F., O’Neill, J., & Csicsvari, J. L.
(2019). The entorhinal cognitive map is attracted to goals. Science. American
Association for the Advancement of Science. https://doi.org/10.1126/science.aav4837
chicago: Boccara, Charlotte N., Michele Nardin, Federico Stella, Joseph O’Neill,
and Jozsef L Csicsvari. “The Entorhinal Cognitive Map Is Attracted to Goals.”
Science. American Association for the Advancement of Science, 2019. https://doi.org/10.1126/science.aav4837.
ieee: C. N. Boccara, M. Nardin, F. Stella, J. O’Neill, and J. L. Csicsvari, “The
entorhinal cognitive map is attracted to goals,” Science, 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.” Science, vol. 363, no. 6434, American Association for the Advancement
of Science, 2019, pp. 1443–47, doi:10.1126/science.aav4837.
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'
...