---
_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. Neuron. 2019;101(1):119-132.e4. doi:10.1016/j.neuron.2018.11.015
apa: Xu, H., Baracskay, P., O’Neill, J., & 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. Neuron. Elsevier. https://doi.org/10.1016/j.neuron.2018.11.015
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.” Neuron. Elsevier, 2019. https://doi.org/10.1016/j.neuron.2018.11.015.
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,” Neuron, 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.”
Neuron, vol. 101, no. 1, Elsevier, 2019, p. 119–132.e4, doi:10.1016/j.neuron.2018.11.015.
short: H. Xu, P. Baracskay, J. O’Neill, J.L. Csicsvari, Neuron 101 (2019) 119–132.e4.
date_created: 2019-01-13T22:59:10Z
date_published: 2019-01-02T00:00:00Z
date_updated: 2023-09-07T12:06:37Z
day: '02'
department:
- _id: JoCs
doi: 10.1016/j.neuron.2018.11.015
ec_funded: 1
external_id:
isi:
- '000454791500014'
intvolume: ' 101'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.doi.org/10.1016/j.neuron.2018.11.015
month: '01'
oa: 1
oa_version: Published Version
page: 119-132.e4
project:
- _id: 257A4776-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '281511'
name: Memory-related information processing in neuronal circuits of the hippocampus
and entorhinal cortex
publication: Neuron
publication_identifier:
issn:
- '10974199'
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/reading-rats-minds/
record:
- id: '837'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Assembly responses of hippocampal CA1 place cells predict learned behavior
in goal-directed spatial tasks on the radial eight-arm maze
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 101
year: '2019'
...
---
_id: '5949'
abstract:
- lang: eng
text: Aberrant proteostasis of protein aggregation may lead to behavior disorders
including chronic mental illnesses (CMI). Furthermore, the neuronal activity alterations
that underlie CMI are not well understood. We recorded the local field potential
and single-unit activity of the hippocampal CA1 region in vivo in rats transgenically
overexpressing the Disrupted-in-Schizophrenia 1 (DISC1) gene (tgDISC1), modeling
sporadic CMI. These tgDISC1 rats have previously been shown to exhibit DISC1 protein
aggregation, disturbances in the dopaminergic system and attention-related deficits.
Recordings were performed during exploration of familiar and novel open field
environments and during sleep, allowing investigation of neuronal abnormalities
in unconstrained behavior. Compared to controls, tgDISC1 place cells exhibited
smaller place fields and decreased speed-modulation of their firing rates, demonstrating
altered spatial coding and deficits in encoding location-independent sensory inputs.
Oscillation analyses showed that tgDISC1 pyramidal neurons had higher theta phase
locking strength during novelty, limiting their phase coding ability. However,
their mean theta phases were more variable at the population level, reducing oscillatory
network synchronization. Finally, tgDISC1 pyramidal neurons showed a lack of novelty-induced
shift in their preferred theta and gamma firing phases, indicating deficits in
coding of novel environments with oscillatory firing. By combining single cell
and neuronal population analyses, we link DISC1 protein pathology with abnormal
hippocampal neural coding and network synchrony, and thereby gain a more comprehensive
understanding of CMI mechanisms.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Karola
full_name: Käfer, Karola
id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
last_name: Käfer
- first_name: Hugo
full_name: Malagon-Vina, Hugo
last_name: Malagon-Vina
- first_name: Desiree
full_name: Dickerson, Desiree
id: 444EB89E-F248-11E8-B48F-1D18A9856A87
last_name: Dickerson
- first_name: Joseph
full_name: O'Neill, Joseph
last_name: O'Neill
- first_name: Svenja V.
full_name: Trossbach, Svenja V.
last_name: Trossbach
- first_name: Carsten
full_name: Korth, Carsten
last_name: Korth
- first_name: Jozsef L
full_name: Csicsvari, Jozsef L
id: 3FA14672-F248-11E8-B48F-1D18A9856A87
last_name: Csicsvari
orcid: 0000-0002-5193-4036
citation:
ama: Käfer K, Malagon-Vina H, Dickerson D, et al. Disrupted-in-schizophrenia 1 overexpression
disrupts hippocampal coding and oscillatory synchronization. Hippocampus.
2019;29(9):802-816. doi:10.1002/hipo.23076
apa: Käfer, K., Malagon-Vina, H., Dickerson, D., O’Neill, J., Trossbach, S. V.,
Korth, C., & Csicsvari, J. L. (2019). Disrupted-in-schizophrenia 1 overexpression
disrupts hippocampal coding and oscillatory synchronization. Hippocampus.
Wiley. https://doi.org/10.1002/hipo.23076
chicago: Käfer, Karola, Hugo Malagon-Vina, Desiree Dickerson, Joseph O’Neill, Svenja
V. Trossbach, Carsten Korth, and Jozsef L Csicsvari. “Disrupted-in-Schizophrenia
1 Overexpression Disrupts Hippocampal Coding and Oscillatory Synchronization.”
Hippocampus. Wiley, 2019. https://doi.org/10.1002/hipo.23076.
ieee: K. Käfer et al., “Disrupted-in-schizophrenia 1 overexpression disrupts
hippocampal coding and oscillatory synchronization,” Hippocampus, vol.
29, no. 9. Wiley, pp. 802–816, 2019.
ista: Käfer K, Malagon-Vina H, Dickerson D, O’Neill J, Trossbach SV, Korth C, Csicsvari
JL. 2019. Disrupted-in-schizophrenia 1 overexpression disrupts hippocampal coding
and oscillatory synchronization. Hippocampus. 29(9), 802–816.
mla: Käfer, Karola, et al. “Disrupted-in-Schizophrenia 1 Overexpression Disrupts
Hippocampal Coding and Oscillatory Synchronization.” Hippocampus, vol.
29, no. 9, Wiley, 2019, pp. 802–16, doi:10.1002/hipo.23076.
short: K. Käfer, H. Malagon-Vina, D. Dickerson, J. O’Neill, S.V. Trossbach, C. Korth,
J.L. Csicsvari, Hippocampus 29 (2019) 802–816.
date_created: 2019-02-10T22:59:18Z
date_published: 2019-09-01T00:00:00Z
date_updated: 2024-03-25T23:30:11Z
day: '01'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1002/hipo.23076
ec_funded: 1
external_id:
isi:
- '000480635400003'
file:
- access_level: open_access
checksum: 5e8de271ca04aef92a5de42d6aac4404
content_type: application/pdf
creator: dernst
date_created: 2019-02-11T10:42:51Z
date_updated: 2020-07-14T12:47:13Z
file_id: '5950'
file_name: 2019_Hippocampus_Kaefer.pdf
file_size: 2132893
relation: main_file
file_date_updated: 2020-07-14T12:47:13Z
has_accepted_license: '1'
intvolume: ' 29'
isi: 1
issue: '9'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 802-816
project:
- _id: 257BBB4C-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '607616'
name: Inter-and intracellular signalling in schizophrenia
publication: Hippocampus
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
record:
- id: '6825'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Disrupted-in-schizophrenia 1 overexpression disrupts hippocampal coding and
oscillatory synchronization
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 29
year: '2019'
...
---
_id: '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'
license: https://creativecommons.org/licenses/by-sa/4.0/
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'
...
---
_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. Neuron. 2019;102:450-461.
doi:10.1016/j.neuron.2019.01.052
apa: Stella, F., Baracskay, P., O’Neill, J., & Csicsvari, J. L. (2019). Hippocampal
reactivation of random trajectories resembling Brownian diffusion. Neuron.
Elsevier. https://doi.org/10.1016/j.neuron.2019.01.052
chicago: Stella, Federico, Peter Baracskay, Joseph O’Neill, and Jozsef L Csicsvari.
“Hippocampal Reactivation of Random Trajectories Resembling Brownian Diffusion.”
Neuron. Elsevier, 2019. https://doi.org/10.1016/j.neuron.2019.01.052.
ieee: F. Stella, P. Baracskay, J. O’Neill, and J. L. Csicsvari, “Hippocampal reactivation
of random trajectories resembling Brownian diffusion,” Neuron, 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.” Neuron, vol. 102, Elsevier, 2019, pp. 450–61, doi:10.1016/j.neuron.2019.01.052.
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: '48'
abstract:
- lang: eng
text: 'The hippocampus is a key brain region for spatial memory and navigation and
is needed at all stages of memory, including encoding, consolidation, and recall.
Hippocampal place cells selectively discharge at specific locations of the environment
to form a cognitive map of the space. During the rest period and sleep following
spatial navigation and/or learning, the waking activity of the place cells is
reactivated within high synchrony events. This reactivation is thought to be important
for memory consolidation and stabilization of the spatial representations. The
aim of my thesis was to directly test whether the reactivation content encoded
in firing patterns of place cells is important for consolidation of spatial memories.
In particular, I aimed to test whether, in cases when multiple spatial memory
traces are acquired during learning, the specific disruption of the reactivation
of a subset of these memories leads to the selective disruption of the corresponding
memory traces or through memory interference the other learned memories are disrupted
as well. In this thesis, using a modified cheeseboard paradigm and a closed-loop
recording setup with feedback optogenetic stimulation, I examined how the disruption
of the reactivation of specific spiking patterns affects consolidation of the
corresponding memory traces. To obtain multiple distinctive memories, animals
had to perform a spatial task in two distinct cheeseboard environments and the
reactivation of spiking patterns associated with one of the environments (target)
was disrupted after learning during four hours rest period using a real-time decoding
method. This real-time decoding method was capable of selectively affecting the
firing rates and cofiring correlations of the target environment-encoding cells.
The selective disruption led to behavioural impairment in the memory tests after
the rest periods in the target environment but not in the other undisrupted control
environment. In addition, the map of the target environment was less stable in
the impaired memory tests compared to the learning session before than the map
of the control environment. However, when the animal relearned the task, the same
map recurred in the target environment that was present during learning before
the disruption. Altogether my work demonstrated that the reactivation content
is important: assembly-related disruption of reactivation can lead to a selective
memory impairment and deficiency in map stability. These findings indeed suggest
that reactivated assembly patterns reflect processes associated with the consolidation
of memory traces. '
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Igor
full_name: Gridchyn, Igor
id: 4B60654C-F248-11E8-B48F-1D18A9856A87
last_name: Gridchyn
orcid: 0000-0002-1807-1929
citation:
ama: Gridchyn I. Reactivation content is important for consolidation of spatial
memory. 2018. doi:10.15479/AT:ISTA:th_1042
apa: Gridchyn, I. (2018). Reactivation content is important for consolidation
of spatial memory. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_1042
chicago: Gridchyn, Igor. “Reactivation Content Is Important for Consolidation of
Spatial Memory.” Institute of Science and Technology Austria, 2018. https://doi.org/10.15479/AT:ISTA:th_1042.
ieee: I. Gridchyn, “Reactivation content is important for consolidation of spatial
memory,” Institute of Science and Technology Austria, 2018.
ista: Gridchyn I. 2018. Reactivation content is important for consolidation of spatial
memory. Institute of Science and Technology Austria.
mla: Gridchyn, Igor. Reactivation Content Is Important for Consolidation of Spatial
Memory. Institute of Science and Technology Austria, 2018, doi:10.15479/AT:ISTA:th_1042.
short: I. Gridchyn, Reactivation Content Is Important for Consolidation of Spatial
Memory, Institute of Science and Technology Austria, 2018.
date_created: 2018-12-11T11:44:21Z
date_published: 2018-08-27T00:00:00Z
date_updated: 2023-09-07T12:42:44Z
day: '27'
ddc:
- '573'
degree_awarded: PhD
department:
- _id: JoCs
doi: 10.15479/AT:ISTA:th_1042
file:
- access_level: closed
checksum: 7db4415e435590fa33542c7b0a0321d7
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dernst
date_created: 2019-04-08T13:36:01Z
date_updated: 2021-02-11T23:30:22Z
embargo_to: open_access
file_id: '6236'
file_name: 2018_Thesis_Gridchyn_source.docx
file_size: 7666687
relation: source_file
- access_level: open_access
checksum: f96f3fe8979f7b1e6db6acaca962b10c
content_type: application/pdf
creator: dernst
date_created: 2019-04-08T13:36:01Z
date_updated: 2021-02-11T11:17:18Z
embargo: 2019-08-29
file_id: '6237'
file_name: 2018_Thesis_Gridchyn.pdf
file_size: 6034153
relation: main_file
file_date_updated: 2021-02-11T23:30:22Z
has_accepted_license: '1'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: '104'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '8006'
pubrep_id: '1042'
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: Reactivation content is important for consolidation of spatial memory
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...
---
_id: '5914'
abstract:
- lang: eng
text: With the advent of optogenetics, it became possible to change the activity
of a targeted population of neurons in a temporally controlled manner. To combine
the advantages of 60-channel in vivo tetrode recording and laser-based optogenetics,
we have developed a closed-loop recording system that allows for the actual electrophysiological
signal to be used as a trigger for the laser light mediating the optogenetic intervention.
We have optimized the weight, size, and shape of the corresponding implant to
make it compatible with the size, force, and movements of a behaving mouse, and
we have shown that the system can efficiently block sharp wave ripple (SWR) events
using those events themselves as a trigger. To demonstrate the full potential
of the optogenetic recording system we present a pilot study addressing the contribution
of SWR events to learning in a complex behavioral task.
article_number: e0087
article_processing_charge: No
author:
- first_name: Dámaris K
full_name: Rangel Guerrero, Dámaris K
id: 4871BCE6-F248-11E8-B48F-1D18A9856A87
last_name: Rangel Guerrero
orcid: 0000-0002-8602-4374
- first_name: James G.
full_name: Donnett, James G.
last_name: Donnett
- first_name: Jozsef L
full_name: Csicsvari, Jozsef L
id: 3FA14672-F248-11E8-B48F-1D18A9856A87
last_name: Csicsvari
orcid: 0000-0002-5193-4036
- first_name: Krisztián
full_name: Kovács, Krisztián
id: 2AB5821E-F248-11E8-B48F-1D18A9856A87
last_name: Kovács
orcid: 0000-0001-6251-1007
citation:
ama: 'Rangel Guerrero DK, Donnett JG, Csicsvari JL, Kovács K. Tetrode recording
from the hippocampus of behaving mice coupled with four-point-irradiation closed-loop
optogenetics: A technique to study the contribution of Hippocampal SWR events
to learning. eNeuro. 2018;5(4). doi:10.1523/ENEURO.0087-18.2018'
apa: 'Rangel Guerrero, D. K., Donnett, J. G., Csicsvari, J. L., & Kovács, K.
(2018). Tetrode recording from the hippocampus of behaving mice coupled with four-point-irradiation
closed-loop optogenetics: A technique to study the contribution of Hippocampal
SWR events to learning. ENeuro. Society of Neuroscience. https://doi.org/10.1523/ENEURO.0087-18.2018'
chicago: 'Rangel Guerrero, Dámaris K, James G. Donnett, Jozsef L Csicsvari, and
Krisztián Kovács. “Tetrode Recording from the Hippocampus of Behaving Mice Coupled
with Four-Point-Irradiation Closed-Loop Optogenetics: A Technique to Study the
Contribution of Hippocampal SWR Events to Learning.” ENeuro. Society of
Neuroscience, 2018. https://doi.org/10.1523/ENEURO.0087-18.2018.'
ieee: 'D. K. Rangel Guerrero, J. G. Donnett, J. L. Csicsvari, and K. Kovács, “Tetrode
recording from the hippocampus of behaving mice coupled with four-point-irradiation
closed-loop optogenetics: A technique to study the contribution of Hippocampal
SWR events to learning,” eNeuro, vol. 5, no. 4. Society of Neuroscience,
2018.'
ista: 'Rangel Guerrero DK, Donnett JG, Csicsvari JL, Kovács K. 2018. Tetrode recording
from the hippocampus of behaving mice coupled with four-point-irradiation closed-loop
optogenetics: A technique to study the contribution of Hippocampal SWR events
to learning. eNeuro. 5(4), e0087.'
mla: 'Rangel Guerrero, Dámaris K., et al. “Tetrode Recording from the Hippocampus
of Behaving Mice Coupled with Four-Point-Irradiation Closed-Loop Optogenetics:
A Technique to Study the Contribution of Hippocampal SWR Events to Learning.”
ENeuro, vol. 5, no. 4, e0087, Society of Neuroscience, 2018, doi:10.1523/ENEURO.0087-18.2018.'
short: D.K. Rangel Guerrero, J.G. Donnett, J.L. Csicsvari, K. Kovács, ENeuro 5 (2018).
date_created: 2019-02-03T22:59:16Z
date_published: 2018-07-27T00:00:00Z
date_updated: 2024-03-25T23:30:06Z
day: '27'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1523/ENEURO.0087-18.2018
ec_funded: 1
external_id:
isi:
- '000443994700007'
file:
- access_level: open_access
checksum: f4915d45fc7ad4648b7b7a13fdecca01
content_type: application/pdf
creator: dernst
date_created: 2019-02-05T12:48:36Z
date_updated: 2020-07-14T12:47:13Z
file_id: '5921'
file_name: 2018_ENeuro_Guerrero.pdf
file_size: 3746884
relation: main_file
file_date_updated: 2020-07-14T12:47:13Z
has_accepted_license: '1'
intvolume: ' 5'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 257D4372-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I2072-B27
name: Interneuron plasticity during spatial learning
publication: eNeuro
publication_status: published
publisher: Society of Neuroscience
quality_controlled: '1'
related_material:
record:
- id: '6849'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'Tetrode recording from the hippocampus of behaving mice coupled with four-point-irradiation
closed-loop optogenetics: A technique to study the contribution of Hippocampal SWR
events to learning'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 5
year: '2018'
...
---
_id: '1118'
abstract:
- lang: eng
text: Sharp wave-ripple (SWR) oscillations play a key role in memory consolidation
during non-rapid eye movement sleep, immobility, and consummatory behavior. However,
whether temporally modulated synaptic excitation or inhibition underlies the ripples
is controversial. To address this question, we performed simultaneous recordings
of excitatory and inhibitory postsynaptic currents (EPSCs and IPSCs) and local
field potentials (LFPs) in the CA1 region of awake mice in vivo. During SWRs,
inhibition dominated over excitation, with a peak conductance ratio of 4.1 ± 0.5.
Furthermore, the amplitude of SWR-associated IPSCs was positively correlated with
SWR magnitude, whereas that of EPSCs was not. Finally, phase analysis indicated
that IPSCs were phase-locked to individual ripple cycles, whereas EPSCs were uniformly
distributed in phase space. Optogenetic inhibition indicated that PV+ interneurons
provided a major contribution to SWR-associated IPSCs. Thus, phasic inhibition,
but not excitation, shapes SWR oscillations in the hippocampal CA1 region in vivo.
acknowledged_ssus:
- _id: M-Shop
- _id: ScienComp
- _id: PreCl
article_processing_charge: No
author:
- first_name: Jian
full_name: Gan, Jian
id: 3614E438-F248-11E8-B48F-1D18A9856A87
last_name: Gan
- first_name: Shih-Ming
full_name: Weng, Shih-Ming
id: 2F9C5AC8-F248-11E8-B48F-1D18A9856A87
last_name: Weng
- first_name: Alejandro
full_name: Pernia-Andrade, Alejandro
id: 36963E98-F248-11E8-B48F-1D18A9856A87
last_name: Pernia-Andrade
- first_name: Jozsef L
full_name: Csicsvari, Jozsef L
id: 3FA14672-F248-11E8-B48F-1D18A9856A87
last_name: Csicsvari
orcid: 0000-0002-5193-4036
- first_name: Peter M
full_name: Jonas, Peter M
id: 353C1B58-F248-11E8-B48F-1D18A9856A87
last_name: Jonas
orcid: 0000-0001-5001-4804
citation:
ama: Gan J, Weng S-M, Pernia-Andrade A, Csicsvari JL, Jonas PM. Phase-locked inhibition,
but not excitation, underlies hippocampal ripple oscillations in awake mice in
vivo. Neuron. 2017;93(2):308-314. doi:10.1016/j.neuron.2016.12.018
apa: Gan, J., Weng, S.-M., Pernia-Andrade, A., Csicsvari, J. L., & Jonas, P.
M. (2017). Phase-locked inhibition, but not excitation, underlies hippocampal
ripple oscillations in awake mice in vivo. Neuron. Elsevier. https://doi.org/10.1016/j.neuron.2016.12.018
chicago: Gan, Jian, Shih-Ming Weng, Alejandro Pernia-Andrade, Jozsef L Csicsvari,
and Peter M Jonas. “Phase-Locked Inhibition, but Not Excitation, Underlies Hippocampal
Ripple Oscillations in Awake Mice in Vivo.” Neuron. Elsevier, 2017. https://doi.org/10.1016/j.neuron.2016.12.018.
ieee: J. Gan, S.-M. Weng, A. Pernia-Andrade, J. L. Csicsvari, and P. M. Jonas, “Phase-locked
inhibition, but not excitation, underlies hippocampal ripple oscillations in awake
mice in vivo,” Neuron, vol. 93, no. 2. Elsevier, pp. 308–314, 2017.
ista: Gan J, Weng S-M, Pernia-Andrade A, Csicsvari JL, Jonas PM. 2017. Phase-locked
inhibition, but not excitation, underlies hippocampal ripple oscillations in awake
mice in vivo. Neuron. 93(2), 308–314.
mla: Gan, Jian, et al. “Phase-Locked Inhibition, but Not Excitation, Underlies Hippocampal
Ripple Oscillations in Awake Mice in Vivo.” Neuron, vol. 93, no. 2, Elsevier,
2017, pp. 308–14, doi:10.1016/j.neuron.2016.12.018.
short: J. Gan, S.-M. Weng, A. Pernia-Andrade, J.L. Csicsvari, P.M. Jonas, Neuron
93 (2017) 308–314.
date_created: 2018-12-11T11:50:15Z
date_published: 2017-01-18T00:00:00Z
date_updated: 2023-09-20T11:31:48Z
day: '18'
ddc:
- '571'
department:
- _id: PeJo
- _id: JoCs
doi: 10.1016/j.neuron.2016.12.018
ec_funded: 1
external_id:
isi:
- '000396428200010'
file:
- access_level: open_access
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:08:56Z
date_updated: 2018-12-12T10:08:56Z
file_id: '4719'
file_name: IST-2017-752-v1+1_1-s2.0-S0896627316309606-main.pdf
file_size: 2738950
relation: main_file
file_date_updated: 2018-12-12T10:08:56Z
has_accepted_license: '1'
intvolume: ' 93'
isi: 1
issue: '2'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 308 - 314
project:
- _id: 25C26B1E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P24909-B24
name: Mechanisms of transmitter release at GABAergic synapses
- _id: 25C0F108-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '268548'
name: Nanophysiology of fast-spiking, parvalbumin-expressing GABAergic interneurons
publication: Neuron
publication_status: published
publisher: Elsevier
publist_id: '6244'
pubrep_id: '752'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Phase-locked inhibition, but not excitation, underlies hippocampal ripple oscillations
in awake mice in vivo
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 93
year: '2017'
...
---
_id: '1132'
abstract:
- lang: eng
text: The hippocampus is thought to initiate systems-wide mnemonic processes through
the reactivation of previously acquired spatial and episodic memory traces, which
can recruit the entorhinal cortex as a first stage of memory redistribution to
other brain areas. Hippocampal reactivation occurs during sharp wave-ripples,
in which synchronous network firing encodes sequences of places.We investigated
the coordination of this replay by recording assembly activity simultaneously
in the CA1 region of the hippocampus and superficial layers of the medial entorhinal
cortex. We found that entorhinal cell assemblies can replay trajectories independently
of the hippocampus and sharp wave-ripples. This suggests that the hippocampus
is not the sole initiator of spatial and episodic memory trace reactivation. Memory
systems involved in these processes may include nonhierarchical, parallel components.
article_processing_charge: No
author:
- first_name: Joseph
full_name: O'Neill, Joseph
id: 426376DC-F248-11E8-B48F-1D18A9856A87
last_name: O'Neill
- first_name: Charlotte
full_name: Boccara, Charlotte
id: 3FC06552-F248-11E8-B48F-1D18A9856A87
last_name: Boccara
orcid: 0000-0001-7237-5109
- first_name: Federico
full_name: Stella, Federico
id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
last_name: Stella
orcid: 0000-0001-9439-3148
- first_name: Philipp
full_name: Schönenberger, Philipp
id: 3B9D816C-F248-11E8-B48F-1D18A9856A87
last_name: Schönenberger
- first_name: Jozsef L
full_name: Csicsvari, Jozsef L
id: 3FA14672-F248-11E8-B48F-1D18A9856A87
last_name: Csicsvari
orcid: 0000-0002-5193-4036
citation:
ama: O’Neill J, Boccara CN, Stella F, Schönenberger P, Csicsvari JL. Superficial
layers of the medial entorhinal cortex replay independently of the hippocampus.
Science. 2017;355(6321):184-188. doi:10.1126/science.aag2787
apa: O’Neill, J., Boccara, C. N., Stella, F., Schönenberger, P., & Csicsvari,
J. L. (2017). Superficial layers of the medial entorhinal cortex replay independently
of the hippocampus. Science. American Association for the Advancement of
Science. https://doi.org/10.1126/science.aag2787
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.” Science. American Association for the
Advancement of Science, 2017. https://doi.org/10.1126/science.aag2787.
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,” Science, 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.” Science, vol. 355, no. 6321,
American Association for the Advancement of Science, 2017, pp. 184–88, doi:10.1126/science.aag2787.
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: '837'
abstract:
- lang: eng
text: 'The hippocampus is a key brain region for memory and notably for spatial
memory, and is needed for both spatial working and reference memories. Hippocampal
place cells selectively discharge in specific locations of the environment to
form mnemonic represen tations of space. Several behavioral protocols have been
designed to test spatial memory which requires the experimental subject to utilize
working memory and reference memory. However, less is known about how these memory
traces are presented in the hippo campus, especially considering tasks that require
both spatial working and long -term reference memory demand. The aim of my thesis
was to elucidate how spatial working memory, reference memory, and the combination
of both are represented in the hippocampus. In this thesis, using a radial eight
-arm maze, I examined how the combined demand on these memories influenced place
cell assemblies while reference memories were partially updated by changing some
of the reward- arms. This was contrasted with task varian ts requiring working
or reference memories only. Reference memory update led to gradual place field
shifts towards the rewards on the switched arms. Cells developed enhanced firing
in passes between newly -rewarded arms as compared to those containing an unchanged
reward. The working memory task did not show such gradual changes. Place assemblies
on occasions replayed trajectories of the maze; at decision points the next arm
choice was preferentially replayed in tasks needing reference memory while in
the pure working memory task the previously visited arm was replayed. Hence trajectory
replay only reflected the decision of the animal in tasks needing reference memory
update. At the reward locations, in all three tasks outbound trajectories of the
current arm were preferentially replayed, showing the animals’ next path to the
center. At reward locations trajectories were replayed preferentially in reverse
temporal order. Moreover, in the center reverse replay was seen in the working
memory task but in the other tasks forward replay was seen. Hence, the direction
of reactivation was determined by the goal locations so that part of the trajectory
which was closer to the goal was reactivated later in an HSE while places further
away from the goal were reactivated earlier. Altogether my work demonstrated that
reference memory update triggers several levels of reorganization of the hippocampal
cognitive map which are not seen in simpler working memory demand s. Moreover,
hippocampus is likely to be involved in spatial decisions through reactivating
planned trajectories when reference memory recall is required for such a decision. '
acknowledgement: 'I am very grateful for the opportunity I have had as a graduate
student to explore and incredibly interesting branch of neuroscience, and for the
people who made it possible. Firstly, I would like to offer my thanks to my supervisor
Professor Jozsef Csicsvari for his great support, guidance and patience offered
over the years. The door to his office was always open whenever I had questions.
I have learned a lot from him about carefully designing experiments, asking interesting
questions and how to integrate results into a broader picture. I also express my
gratitude to the remarkable post- doc , Dr. Joseph O’Neill. He is a gre at scientific
role model who is always willing to teach , and advice and talk through problems
with his full attention. Many thanks to my wonderful “office mates” over the years
and their support and encouragement, Alice Avernhe, Philipp Schönenberger, Desiree
Dickerson, Karel Blahna, Charlotte Boccara, Igor Gridchyn, Peter Baracskay, Krisztián
Kovács, Dámaris Rangel, Karola Käfer and Federico Stella. They were the ones in
the lab for the many useful discussions about science and for making the laboratory
such a nice and friendly place to work in. A special thank goes to Michael LoBianco
and Jago Wallenschus for wonderful technical support. I would also like to thank
Professor Peter Jonas and Professor David M Bannerman for being my qualifying exam
and thesi s committee members despite their busy schedule. I am also very thankful
to IST Austria for their support all throughout my PhD. '
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Haibing
full_name: Xu, Haibing
id: 310349D0-F248-11E8-B48F-1D18A9856A87
last_name: Xu
citation:
ama: Xu H. Reactivation of the hippocampal cognitive map in goal-directed spatial
tasks. 2017. doi:10.15479/AT:ISTA:th_858
apa: Xu, H. (2017). Reactivation of the hippocampal cognitive map in goal-directed
spatial tasks. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_858
chicago: Xu, Haibing. “Reactivation of the Hippocampal Cognitive Map in Goal-Directed
Spatial Tasks.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:th_858.
ieee: H. Xu, “Reactivation of the hippocampal cognitive map in goal-directed spatial
tasks,” Institute of Science and Technology Austria, 2017.
ista: Xu H. 2017. Reactivation of the hippocampal cognitive map in goal-directed
spatial tasks. Institute of Science and Technology Austria.
mla: Xu, Haibing. Reactivation of the Hippocampal Cognitive Map in Goal-Directed
Spatial Tasks. Institute of Science and Technology Austria, 2017, doi:10.15479/AT:ISTA:th_858.
short: H. Xu, Reactivation of the Hippocampal Cognitive Map in Goal-Directed Spatial
Tasks, Institute of Science and Technology Austria, 2017.
date_created: 2018-12-11T11:48:46Z
date_published: 2017-08-23T00:00:00Z
date_updated: 2023-09-07T12:06:38Z
day: '23'
ddc:
- '571'
degree_awarded: PhD
department:
- _id: JoCs
doi: 10.15479/AT:ISTA:th_858
file:
- access_level: closed
checksum: f11925fbbce31e495124b6bc4f10573c
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dernst
date_created: 2019-04-05T08:59:51Z
date_updated: 2020-07-14T12:48:12Z
file_id: '6213'
file_name: 2017_Xu_Haibing_Thesis_Source.docx
file_size: 3589490
relation: source_file
- access_level: open_access
checksum: ffb10749a537d615fab1ef0937ccb157
content_type: application/pdf
creator: dernst
date_created: 2019-04-05T08:59:51Z
date_updated: 2020-07-14T12:48:12Z
file_id: '6214'
file_name: 2017_Xu_Thesis_IST.pdf
file_size: 11668613
relation: main_file
file_date_updated: 2020-07-14T12:48:12Z
has_accepted_license: '1'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: '93'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '6811'
pubrep_id: '858'
related_material:
record:
- id: '5828'
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: Reactivation of the hippocampal cognitive map in goal-directed spatial tasks
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: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2017'
...
---
_id: '514'
abstract:
- lang: eng
text: 'Orientation in space is represented in specialized brain circuits. Persistent
head direction signals are transmitted from anterior thalamus to the presubiculum,
but the identity of the presubicular target neurons, their connectivity and function
in local microcircuits are unknown. Here, we examine how thalamic afferents recruit
presubicular principal neurons and Martinotti interneurons, and the ensuing synaptic
interactions between these cells. Pyramidal neuron activation of Martinotti cells
in superficial layers is strongly facilitating such that high-frequency head directional
stimulation efficiently unmutes synaptic excitation. Martinotti-cell feedback
plays a dual role: precisely timed spikes may not inhibit the firing of in-tune
head direction cells, while exerting lateral inhibition. Autonomous attractor
dynamics emerge from a modelled network implementing wiring motifs and timing
sensitive synaptic interactions in the pyramidal - Martinotti-cell feedback loop.
This inhibitory microcircuit is therefore tuned to refine and maintain head direction
information in the presubiculum.'
article_number: '16032'
author:
- first_name: Jean
full_name: Simonnet, Jean
last_name: Simonnet
- first_name: Mérie
full_name: Nassar, Mérie
last_name: Nassar
- first_name: Federico
full_name: Stella, Federico
id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
last_name: Stella
orcid: 0000-0001-9439-3148
- first_name: Ivan
full_name: Cohen, Ivan
last_name: Cohen
- first_name: Bertrand
full_name: Mathon, Bertrand
last_name: Mathon
- first_name: Charlotte
full_name: Boccara, Charlotte
id: 3FC06552-F248-11E8-B48F-1D18A9856A87
last_name: Boccara
orcid: 0000-0001-7237-5109
- first_name: Richard
full_name: Miles, Richard
last_name: Miles
- first_name: Desdemona
full_name: Fricker, Desdemona
last_name: Fricker
citation:
ama: Simonnet J, Nassar M, Stella F, et al. Activity dependent feedback inhibition
may maintain head direction signals in mouse presubiculum. Nature Communications.
2017;8. doi:10.1038/ncomms16032
apa: Simonnet, J., Nassar, M., Stella, F., Cohen, I., Mathon, B., Boccara, C. N.,
… Fricker, D. (2017). Activity dependent feedback inhibition may maintain head
direction signals in mouse presubiculum. Nature Communications. Nature
Publishing Group. https://doi.org/10.1038/ncomms16032
chicago: Simonnet, Jean, Mérie Nassar, Federico Stella, Ivan Cohen, Bertrand Mathon,
Charlotte N. Boccara, Richard Miles, and Desdemona Fricker. “Activity Dependent
Feedback Inhibition May Maintain Head Direction Signals in Mouse Presubiculum.”
Nature Communications. Nature Publishing Group, 2017. https://doi.org/10.1038/ncomms16032.
ieee: J. Simonnet et al., “Activity dependent feedback inhibition may maintain
head direction signals in mouse presubiculum,” Nature Communications, vol.
8. Nature Publishing Group, 2017.
ista: Simonnet J, Nassar M, Stella F, Cohen I, Mathon B, Boccara CN, Miles R, Fricker
D. 2017. Activity dependent feedback inhibition may maintain head direction signals
in mouse presubiculum. Nature Communications. 8, 16032.
mla: Simonnet, Jean, et al. “Activity Dependent Feedback Inhibition May Maintain
Head Direction Signals in Mouse Presubiculum.” Nature Communications, vol.
8, 16032, Nature Publishing Group, 2017, doi:10.1038/ncomms16032.
short: J. Simonnet, M. Nassar, F. Stella, I. Cohen, B. Mathon, C.N. Boccara, R.
Miles, D. Fricker, Nature Communications 8 (2017).
date_created: 2018-12-11T11:46:54Z
date_published: 2017-07-01T00:00:00Z
date_updated: 2021-01-12T08:01:16Z
day: '01'
ddc:
- '571'
department:
- _id: JoCs
doi: 10.1038/ncomms16032
file:
- access_level: open_access
checksum: 76d8a2b72a58e56adb410ec37dfa7eee
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:14:31Z
date_updated: 2020-07-14T12:46:36Z
file_id: '5083'
file_name: IST-2018-937-v1+1_2017_Stella_Activity_dependent.pdf
file_size: 2948357
relation: main_file
file_date_updated: 2020-07-14T12:46:36Z
has_accepted_license: '1'
intvolume: ' 8'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
issn:
- '20411723'
publication_status: published
publisher: Nature Publishing Group
publist_id: '7305'
pubrep_id: '937'
quality_controlled: '1'
scopus_import: 1
status: public
title: Activity dependent feedback inhibition may maintain head direction signals
in mouse presubiculum
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: 8
year: '2017'
...
---
_id: '993'
abstract:
- lang: eng
text: In real-world applications, observations are often constrained to a small
fraction of a system. Such spatial subsampling can be caused by the inaccessibility
or the sheer size of the system, and cannot be overcome by longer sampling. Spatial
subsampling can strongly bias inferences about a system’s aggregated properties.
To overcome the bias, we derive analytically a subsampling scaling framework that
is applicable to different observables, including distributions of neuronal avalanches,
of number of people infected during an epidemic outbreak, and of node degrees.
We demonstrate how to infer the correct distributions of the underlying full system,
how to apply it to distinguish critical from subcritical systems, and how to disentangle
subsampling and finite size effects. Lastly, we apply subsampling scaling to neuronal
avalanche models and to recordings from developing neural networks. We show that
only mature, but not young networks follow power-law scaling, indicating self-organization
to criticality during development.
article_number: '15140'
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Anna
full_name: Levina (Martius), Anna
id: 35AF8020-F248-11E8-B48F-1D18A9856A87
last_name: Levina (Martius)
- first_name: Viola
full_name: Priesemann, Viola
last_name: Priesemann
citation:
ama: Levina (Martius) A, Priesemann V. Subsampling scaling. Nature Communications.
2017;8. doi:10.1038/ncomms15140
apa: Levina (Martius), A., & Priesemann, V. (2017). Subsampling scaling. Nature
Communications. Nature Publishing Group. https://doi.org/10.1038/ncomms15140
chicago: Levina (Martius), Anna, and Viola Priesemann. “Subsampling Scaling.” Nature
Communications. Nature Publishing Group, 2017. https://doi.org/10.1038/ncomms15140.
ieee: A. Levina (Martius) and V. Priesemann, “Subsampling scaling,” Nature Communications,
vol. 8. Nature Publishing Group, 2017.
ista: Levina (Martius) A, Priesemann V. 2017. Subsampling scaling. Nature Communications.
8, 15140.
mla: Levina (Martius), Anna, and Viola Priesemann. “Subsampling Scaling.” Nature
Communications, vol. 8, 15140, Nature Publishing Group, 2017, doi:10.1038/ncomms15140.
short: A. Levina (Martius), V. Priesemann, Nature Communications 8 (2017).
date_created: 2018-12-11T11:49:35Z
date_published: 2017-05-04T00:00:00Z
date_updated: 2023-09-22T09:54:07Z
day: '04'
ddc:
- '005'
- '571'
department:
- _id: GaTk
- _id: JoCs
doi: 10.1038/ncomms15140
ec_funded: 1
external_id:
isi:
- '000400560700001'
file:
- access_level: open_access
checksum: 9880212f8c4c53404c7c6fbf9023c53a
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:15:05Z
date_updated: 2020-07-14T12:48:19Z
file_id: '5122'
file_name: IST-2017-819-v1+1_2017_Levina_SubsamplingScaling.pdf
file_size: 746224
relation: main_file
file_date_updated: 2020-07-14T12:48:19Z
has_accepted_license: '1'
intvolume: ' 8'
isi: 1
language:
- iso: eng
month: '05'
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
publication: Nature Communications
publication_identifier:
issn:
- '20411723'
publication_status: published
publisher: Nature Publishing Group
publist_id: '6406'
pubrep_id: '819'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Subsampling scaling
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 8
year: '2017'
...
---
_id: '1487'
abstract:
- lang: eng
text: Rhythms with time scales of multiple cycles per second permeate the mammalian
brain, yet neuroscientists are not certain of their functional roles. One leading
idea is that coherent oscillation between two brain regions facilitates the exchange
of information between them. In rats, the hippocampus and the vibrissal sensorimotor
system both are characterized by rhythmic oscillation in the theta range, 5–12
Hz. Previous work has been divided as to whether the two rhythms are independent
or coherent. To resolve this question, we acquired three measures from rats—whisker
motion, hippocampal local field potential (LFP), and barrel cortex unit firing—during
a whisker-mediated texture discrimination task and during control conditions (not
engaged in a whisker-mediated memory task). Compared to control conditions, the
theta band of hippocampal LFP showed a marked increase in power as the rats approached
and then palpated the texture. Phase synchronization between whisking and hippocampal
LFP increased by almost 50% during approach and texture palpation. In addition,
a greater proportion of barrel cortex neurons showed firing that was phase-locked
to hippocampal theta while rats were engaged in the discrimination task. Consistent
with a behavioral consequence of phase synchronization, the rats identified the
texture more rapidly and with lower error likelihood on trials in which there
was an increase in theta-whisking coherence at the moment of texture palpation.
These results suggest that coherence between the whisking rhythm, barrel cortex
firing, and hippocampal LFP is augmented selectively during epochs in which the
rat collects sensory information and that such coherence enhances the efficiency
of integration of stimulus information into memory and decision-making centers.
acknowledgement: We thank Eric Maris, Demian Battaglia, and Rodrigo Quian Quiroga
for useful discussions. We are grateful to Fabrizio Manzino and Marco Gigante for
construction of the behavioral apparatus, Igor Perkon for developing custom whisker
tracking software and to Francesca Pulecchi for animal care and histological processing.
article_number: e1002384
author:
- first_name: Natalia
full_name: Grion, Natalia
last_name: Grion
- first_name: Athena
full_name: Akrami, Athena
last_name: Akrami
- first_name: Yangfang
full_name: Zuo, Yangfang
last_name: Zuo
- first_name: Federico
full_name: Stella, Federico
id: 39AF1E74-F248-11E8-B48F-1D18A9856A87
last_name: Stella
orcid: 0000-0001-9439-3148
- first_name: Mathew
full_name: Diamond, Mathew
last_name: Diamond
citation:
ama: Grion N, Akrami A, Zuo Y, Stella F, Diamond M. Coherence between rat sensorimotor
system and hippocampus is enhanced during tactile discrimination. PLoS Biology.
2016;14(2). doi:10.1371/journal.pbio.1002384
apa: Grion, N., Akrami, A., Zuo, Y., Stella, F., & Diamond, M. (2016). Coherence
between rat sensorimotor system and hippocampus is enhanced during tactile discrimination.
PLoS Biology. Public Library of Science. https://doi.org/10.1371/journal.pbio.1002384
chicago: Grion, Natalia, Athena Akrami, Yangfang Zuo, Federico Stella, and Mathew
Diamond. “Coherence between Rat Sensorimotor System and Hippocampus Is Enhanced
during Tactile Discrimination.” PLoS Biology. Public Library of Science,
2016. https://doi.org/10.1371/journal.pbio.1002384.
ieee: N. Grion, A. Akrami, Y. Zuo, F. Stella, and M. Diamond, “Coherence between
rat sensorimotor system and hippocampus is enhanced during tactile discrimination,”
PLoS Biology, vol. 14, no. 2. Public Library of Science, 2016.
ista: Grion N, Akrami A, Zuo Y, Stella F, Diamond M. 2016. Coherence between rat
sensorimotor system and hippocampus is enhanced during tactile discrimination.
PLoS Biology. 14(2), e1002384.
mla: Grion, Natalia, et al. “Coherence between Rat Sensorimotor System and Hippocampus
Is Enhanced during Tactile Discrimination.” PLoS Biology, vol. 14, no.
2, e1002384, Public Library of Science, 2016, doi:10.1371/journal.pbio.1002384.
short: N. Grion, A. Akrami, Y. Zuo, F. Stella, M. Diamond, PLoS Biology 14 (2016).
date_created: 2018-12-11T11:52:18Z
date_published: 2016-02-18T00:00:00Z
date_updated: 2021-01-12T06:51:05Z
day: '18'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1371/journal.pbio.1002384
file:
- access_level: open_access
checksum: 3a5ce0d4e4e36bd6ceb4be761f85644a
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:15:11Z
date_updated: 2020-07-14T12:44:57Z
file_id: '5129'
file_name: IST-2016-518-v1+1_journal.pbio.1002384.PDF
file_size: 2879899
relation: main_file
file_date_updated: 2020-07-14T12:44:57Z
has_accepted_license: '1'
intvolume: ' 14'
issue: '2'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
publication: PLoS Biology
publication_status: published
publisher: Public Library of Science
publist_id: '5700'
pubrep_id: '518'
quality_controlled: '1'
scopus_import: 1
status: public
title: Coherence between rat sensorimotor system and hippocampus is enhanced during
tactile discrimination
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: 14
year: '2016'
...
---
_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. Nature Communications. 2016;7. doi:10.1038/ncomms11824
apa: Schönenberger, P., O’Neill, J., & Csicsvari, J. L. (2016). Activity dependent
plasticity of hippocampal place maps. Nature Communications. Nature Publishing
Group. https://doi.org/10.1038/ncomms11824
chicago: Schönenberger, Philipp, Joseph O’Neill, and Jozsef L Csicsvari. “Activity
Dependent Plasticity of Hippocampal Place Maps.” Nature Communications.
Nature Publishing Group, 2016. https://doi.org/10.1038/ncomms11824.
ieee: P. Schönenberger, J. O’Neill, and J. L. Csicsvari, “Activity dependent plasticity
of hippocampal place maps,” Nature Communications, 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.” Nature Communications, vol. 7, 11824, Nature Publishing Group,
2016, doi:10.1038/ncomms11824.
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.
PLoS One. 2016;11(10). doi:10.1371/journal.pone.0164675
apa: Kovács, K., O’Neill, J., Schönenberger, P., Penttonen, M., Rangel Guerrero,
D. K., & 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. PLoS One. Public Library of Science.
https://doi.org/10.1371/journal.pone.0164675
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.” PLoS One. Public Library
of Science, 2016. https://doi.org/10.1371/journal.pone.0164675.
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,” PLoS One, 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.” PLoS One, vol. 11, no. 10, e0164675,
Public Library of Science, 2016, doi:10.1371/journal.pone.0164675.
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: '1663'
abstract:
- lang: eng
text: CREB-binding protein (CBP) and p300 are transcriptional coactivators involved
in numerous biological processes that affect cell growth, transformation, differentiation,
and development. In this study, we provide evidence of the involvement of homeodomain-interacting
protein kinase 2 (HIPK2) in the regulation of CBP activity. We show that HIPK2
interacts with and phosphorylates several regions of CBP. We demonstrate that
serines 2361, 2363, 2371, 2376, and 2381 are responsible for the HIPK2-induced
mobility shift of CBP C-terminal activation domain. Moreover, we show that HIPK2
strongly potentiates the transcriptional activity of CBP. However, our data suggest
that HIPK2 activates CBP mainly by counteracting the repressive action of cell
cycle regulatory domain 1 (CRD1), located between amino acids 977 and 1076, independently
of CBP phosphorylation. Our findings thus highlight a complex regulation of CBP
activity by HIPK2, which might be relevant for the control of specific sets of
target genes involved in cellular proliferation, differentiation and apoptosis.
author:
- first_name: Krisztián
full_name: Kovács, Krisztián
id: 2AB5821E-F248-11E8-B48F-1D18A9856A87
last_name: Kovács
- first_name: Myriam
full_name: Steinmann, Myriam
last_name: Steinmann
- first_name: Olivier
full_name: Halfon, Olivier
last_name: Halfon
- first_name: Pierre
full_name: Magistretti, Pierre
last_name: Magistretti
- first_name: Jean
full_name: Cardinaux, Jean
last_name: Cardinaux
citation:
ama: Kovács K, Steinmann M, Halfon O, Magistretti P, Cardinaux J. Complex regulation
of CREB-binding protein by homeodomain-interacting protein kinase 2. Cellular
Signalling. 2015;27(11):2252-2260. doi:10.1016/j.cellsig.2015.08.001
apa: Kovács, K., Steinmann, M., Halfon, O., Magistretti, P., & Cardinaux, J.
(2015). Complex regulation of CREB-binding protein by homeodomain-interacting
protein kinase 2. Cellular Signalling. Elsevier. https://doi.org/10.1016/j.cellsig.2015.08.001
chicago: Kovács, Krisztián, Myriam Steinmann, Olivier Halfon, Pierre Magistretti,
and Jean Cardinaux. “Complex Regulation of CREB-Binding Protein by Homeodomain-Interacting
Protein Kinase 2.” Cellular Signalling. Elsevier, 2015. https://doi.org/10.1016/j.cellsig.2015.08.001.
ieee: K. Kovács, M. Steinmann, O. Halfon, P. Magistretti, and J. Cardinaux, “Complex
regulation of CREB-binding protein by homeodomain-interacting protein kinase 2,”
Cellular Signalling, vol. 27, no. 11. Elsevier, pp. 2252–2260, 2015.
ista: Kovács K, Steinmann M, Halfon O, Magistretti P, Cardinaux J. 2015. Complex
regulation of CREB-binding protein by homeodomain-interacting protein kinase 2.
Cellular Signalling. 27(11), 2252–2260.
mla: Kovács, Krisztián, et al. “Complex Regulation of CREB-Binding Protein by Homeodomain-Interacting
Protein Kinase 2.” Cellular Signalling, vol. 27, no. 11, Elsevier, 2015,
pp. 2252–60, doi:10.1016/j.cellsig.2015.08.001.
short: K. Kovács, M. Steinmann, O. Halfon, P. Magistretti, J. Cardinaux, Cellular
Signalling 27 (2015) 2252–2260.
date_created: 2018-12-11T11:53:20Z
date_published: 2015-11-01T00:00:00Z
date_updated: 2021-01-12T06:52:22Z
day: '01'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1016/j.cellsig.2015.08.001
ec_funded: 1
file:
- access_level: local
checksum: 4ee690b6444b7a43523237f0941457d1
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:18:03Z
date_updated: 2020-07-14T12:45:10Z
file_id: '5321'
file_name: IST-2016-578-v1+1_CLS-D-15-00072R1_.pdf
file_size: 1735337
relation: main_file
file_date_updated: 2020-07-14T12:45:10Z
has_accepted_license: '1'
intvolume: ' 27'
issue: '11'
language:
- iso: eng
month: '11'
oa_version: Published Version
page: 2252 - 2260
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Cellular Signalling
publication_status: published
publisher: Elsevier
publist_id: '5487'
pubrep_id: '578'
quality_controlled: '1'
scopus_import: 1
status: public
title: Complex regulation of CREB-binding protein by homeodomain-interacting protein
kinase 2
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 27
year: '2015'
...
---
_id: '1874'
abstract:
- lang: eng
text: 'The hippocampal region, comprising the hippocampal formation and the parahippocampal
region, has been one of the most intensively studied parts of the brain for decades.
Better understanding of its functional diversity and complexity has led to an
increased demand for specificity in experimental procedures and manipulations.
In view of the complex 3D structure of the hippocampal region, precisely positioned
experimental approaches require a fine-grained architectural description that
is available and readable to experimentalists lacking detailed anatomical experience.
In this paper, we provide the first cyto- and chemoarchitectural description of
the hippocampal formation and parahippocampal region in the rat at high resolution
and in the three standard sectional planes: coronal, horizontal and sagittal.
The atlas uses a series of adjacent sections stained for neurons and for a number
of chemical marker substances, particularly parvalbumin and calbindin. All the
borders defined in one plane have been cross-checked against their counterparts
in the other two planes. The entire dataset will be made available as a web-based
interactive application through the Rodent Brain WorkBench (http://www.rbwb.org)
which, together with this paper, provides a unique atlas resource.'
author:
- first_name: Charlotte
full_name: Boccara, Charlotte
id: 3FC06552-F248-11E8-B48F-1D18A9856A87
last_name: Boccara
orcid: 0000-0001-7237-5109
- first_name: Lisa
full_name: Kjønigsen, Lisa
last_name: Kjønigsen
- first_name: Ingvild
full_name: Hammer, Ingvild
last_name: Hammer
- first_name: Jan
full_name: Bjaalie, Jan
last_name: Bjaalie
- first_name: Trygve
full_name: Leergaard, Trygve
last_name: Leergaard
- first_name: Menno
full_name: Witter, Menno
last_name: Witter
citation:
ama: Boccara CN, Kjønigsen L, Hammer I, Bjaalie J, Leergaard T, Witter M. A three-plane
architectonic atlas of the rat hippocampal region. Hippocampus. 2015;25(7):838-857.
doi:10.1002/hipo.22407
apa: Boccara, C. N., Kjønigsen, L., Hammer, I., Bjaalie, J., Leergaard, T., &
Witter, M. (2015). A three-plane architectonic atlas of the rat hippocampal region.
Hippocampus. Wiley. https://doi.org/10.1002/hipo.22407
chicago: Boccara, Charlotte N., Lisa Kjønigsen, Ingvild Hammer, Jan Bjaalie, Trygve
Leergaard, and Menno Witter. “A Three-Plane Architectonic Atlas of the Rat Hippocampal
Region.” Hippocampus. Wiley, 2015. https://doi.org/10.1002/hipo.22407.
ieee: C. N. Boccara, L. Kjønigsen, I. Hammer, J. Bjaalie, T. Leergaard, and M. Witter,
“A three-plane architectonic atlas of the rat hippocampal region,” Hippocampus,
vol. 25, no. 7. Wiley, pp. 838–857, 2015.
ista: Boccara CN, Kjønigsen L, Hammer I, Bjaalie J, Leergaard T, Witter M. 2015.
A three-plane architectonic atlas of the rat hippocampal region. Hippocampus.
25(7), 838–857.
mla: Boccara, Charlotte N., et al. “A Three-Plane Architectonic Atlas of the Rat
Hippocampal Region.” Hippocampus, vol. 25, no. 7, Wiley, 2015, pp. 838–57,
doi:10.1002/hipo.22407.
short: C.N. Boccara, L. Kjønigsen, I. Hammer, J. Bjaalie, T. Leergaard, M. Witter,
Hippocampus 25 (2015) 838–857.
date_created: 2018-12-11T11:54:29Z
date_published: 2015-07-01T00:00:00Z
date_updated: 2021-01-12T06:53:46Z
day: '01'
department:
- _id: JoCs
doi: 10.1002/hipo.22407
intvolume: ' 25'
issue: '7'
language:
- iso: eng
month: '07'
oa_version: None
page: 838 - 857
publication: Hippocampus
publication_status: published
publisher: Wiley
publist_id: '5222'
quality_controlled: '1'
scopus_import: 1
status: public
title: A three-plane architectonic atlas of the rat hippocampal region
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 25
year: '2015'
...
---
_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. Neuron.
2014;83(1):8-10. doi:10.1016/j.neuron.2014.06.013
apa: O’Neill, J., & Csicsvari, J. L. (2014). Learning by example in the hippocampus.
Neuron. Elsevier. https://doi.org/10.1016/j.neuron.2014.06.013
chicago: O’Neill, Joseph, and Jozsef L Csicsvari. “Learning by Example in the Hippocampus.”
Neuron. Elsevier, 2014. https://doi.org/10.1016/j.neuron.2014.06.013.
ieee: J. O’Neill and J. L. Csicsvari, “Learning by example in the hippocampus,”
Neuron, 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.”
Neuron, vol. 83, no. 1, Elsevier, 2014, pp. 8–10, doi:10.1016/j.neuron.2014.06.013.
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: '2004'
abstract:
- lang: eng
text: We have assembled a network of cell-fate determining transcription factors
that play a key role in the specification of the ventral neuronal subtypes of
the spinal cord on the basis of published transcriptional interactions. Asynchronous
Boolean modelling of the network was used to compare simulation results with reported
experimental observations. Such comparison highlighted the need to include additional
regulatory connections in order to obtain the fixed point attractors of the model
associated with the five known progenitor cell types located in the ventral spinal
cord. The revised gene regulatory network reproduced previously observed cell
state switches between progenitor cells observed in knock-out animal models or
in experiments where the transcription factors were overexpressed. Furthermore
the network predicted the inhibition of Irx3 by Nkx2.2 and this prediction was
tested experimentally. Our results provide evidence for the existence of an as
yet undescribed inhibitory connection which could potentially have significance
beyond the ventral spinal cord. The work presented in this paper demonstrates
the strength of Boolean modelling for identifying gene regulatory networks.
article_number: e111430
author:
- first_name: Anna
full_name: Lovrics, Anna
last_name: Lovrics
- first_name: Yu
full_name: Gao, Yu
last_name: Gao
- first_name: Bianka
full_name: Juhász, Bianka
last_name: Juhász
- first_name: István
full_name: Bock, István
last_name: Bock
- first_name: Helen
full_name: Byrne, Helen
last_name: Byrne
- first_name: András
full_name: Dinnyés, András
last_name: Dinnyés
- first_name: Krisztián
full_name: Kovács, Krisztián
id: 2AB5821E-F248-11E8-B48F-1D18A9856A87
last_name: Kovács
citation:
ama: Lovrics A, Gao Y, Juhász B, et al. Boolean modelling reveals new regulatory
connections between transcription factors orchestrating the development of the
ventral spinal cord. PLoS One. 2014;9(11). doi:10.1371/journal.pone.0111430
apa: Lovrics, A., Gao, Y., Juhász, B., Bock, I., Byrne, H., Dinnyés, A., & Kovács,
K. (2014). Boolean modelling reveals new regulatory connections between transcription
factors orchestrating the development of the ventral spinal cord. PLoS One.
Public Library of Science. https://doi.org/10.1371/journal.pone.0111430
chicago: Lovrics, Anna, Yu Gao, Bianka Juhász, István Bock, Helen Byrne, András
Dinnyés, and Krisztián Kovács. “Boolean Modelling Reveals New Regulatory Connections
between Transcription Factors Orchestrating the Development of the Ventral Spinal
Cord.” PLoS One. Public Library of Science, 2014. https://doi.org/10.1371/journal.pone.0111430.
ieee: A. Lovrics et al., “Boolean modelling reveals new regulatory connections
between transcription factors orchestrating the development of the ventral spinal
cord,” PLoS One, vol. 9, no. 11. Public Library of Science, 2014.
ista: Lovrics A, Gao Y, Juhász B, Bock I, Byrne H, Dinnyés A, Kovács K. 2014. Boolean
modelling reveals new regulatory connections between transcription factors orchestrating
the development of the ventral spinal cord. PLoS One. 9(11), e111430.
mla: Lovrics, Anna, et al. “Boolean Modelling Reveals New Regulatory Connections
between Transcription Factors Orchestrating the Development of the Ventral Spinal
Cord.” PLoS One, vol. 9, no. 11, e111430, Public Library of Science, 2014,
doi:10.1371/journal.pone.0111430.
short: A. Lovrics, Y. Gao, B. Juhász, I. Bock, H. Byrne, A. Dinnyés, K. Kovács,
PLoS One 9 (2014).
date_created: 2018-12-11T11:55:09Z
date_published: 2014-11-14T00:00:00Z
date_updated: 2023-02-23T14:06:14Z
day: '14'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1371/journal.pone.0111430
ec_funded: 1
file:
- access_level: open_access
checksum: a2289b843f7463eb1233f9ce45e6a943
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:10:58Z
date_updated: 2020-07-14T12:45:24Z
file_id: '4850'
file_name: IST-2016-435-v1+1_journal.pone.0111430.pdf
file_size: 829363
relation: main_file
file_date_updated: 2020-07-14T12:45:24Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '11'
language:
- iso: eng
month: '11'
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
publication: PLoS One
publication_status: published
publisher: Public Library of Science
publist_id: '5072'
pubrep_id: '435'
quality_controlled: '1'
related_material:
record:
- id: '9722'
relation: research_data
status: public
scopus_import: 1
status: public
title: Boolean modelling reveals new regulatory connections between transcription
factors orchestrating the development of the ventral spinal cord
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: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2014'
...
---
_id: '2005'
abstract:
- lang: eng
text: By eliciting a natural exploratory behavior in rats, head scanning, a study
reveals that hippocampal place cells form new, stable firing fields in those locations
where the behavior has just occurred.
author:
- first_name: David
full_name: Dupret, David
last_name: Dupret
- first_name: Jozsef L
full_name: Csicsvari, Jozsef L
id: 3FA14672-F248-11E8-B48F-1D18A9856A87
last_name: Csicsvari
orcid: 0000-0002-5193-4036
citation:
ama: Dupret D, Csicsvari JL. Turning heads to remember places. Nature Neuroscience.
2014;17(5):643-644. doi:10.1038/nn.3700
apa: Dupret, D., & Csicsvari, J. L. (2014). Turning heads to remember places.
Nature Neuroscience. Nature Publishing Group. https://doi.org/10.1038/nn.3700
chicago: Dupret, David, and Jozsef L Csicsvari. “Turning Heads to Remember Places.”
Nature Neuroscience. Nature Publishing Group, 2014. https://doi.org/10.1038/nn.3700.
ieee: D. Dupret and J. L. Csicsvari, “Turning heads to remember places,” Nature
Neuroscience, vol. 17, no. 5. Nature Publishing Group, pp. 643–644, 2014.
ista: Dupret D, Csicsvari JL. 2014. Turning heads to remember places. Nature Neuroscience.
17(5), 643–644.
mla: Dupret, David, and Jozsef L. Csicsvari. “Turning Heads to Remember Places.”
Nature Neuroscience, vol. 17, no. 5, Nature Publishing Group, 2014, pp.
643–44, doi:10.1038/nn.3700.
short: D. Dupret, J.L. Csicsvari, Nature Neuroscience 17 (2014) 643–644.
date_created: 2018-12-11T11:55:09Z
date_published: 2014-04-25T00:00:00Z
date_updated: 2021-01-12T06:54:40Z
day: '25'
department:
- _id: JoCs
doi: 10.1038/nn.3700
intvolume: ' 17'
issue: '5'
language:
- iso: eng
month: '04'
oa_version: None
page: 643 - 644
publication: Nature Neuroscience
publication_status: published
publisher: Nature Publishing Group
publist_id: '5071'
quality_controlled: '1'
scopus_import: 1
status: public
title: Turning heads to remember places
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2014'
...