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  Spontaneous cortical activity is transiently poised close to criticality

Hahn, G., Ponce-Alvarez, A., Monier, C., Benvenuti, G., Kumar, A., Chavane, F., et al. (2017). Spontaneous cortical activity is transiently poised close to criticality. PLoS Computational Biology, 13(5): e1005543. doi:10.1371/journal.pcbi.1005543.

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 Creators:
Hahn, Gerald1, Author
Ponce-Alvarez, Adrian 1, Author
Monier, Cyril1, Author
Benvenuti, Giacomo1, Author
Kumar, Arvind1, Author
Chavane, Frédéric 1, Author
Deco, Gustavo1, 2, Author              
Frégnac, Yves 1, Author
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1External Organizations, ou_persistent22              
2Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              

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 Abstract: Brain activity displays a large repertoire of dynamics across the sleep-wake cycle and even during anesthesia. It was suggested that criticality could serve as a unifying principle underlying the diversity of dynamics. This view has been supported by the observation of spontaneous bursts of cortical activity with scale-invariant sizes and durations, known as neuronal avalanches, in recordings of mesoscopic cortical signals. However, the existence of neuronal avalanches in spiking activity has been equivocal with studies reporting both its presence and absence. Here, we show that signs of criticality in spiking activity can change between synchronized and desynchronized cortical states. We analyzed the spontaneous activity in the primary visual cortex of the anesthetized cat and the awake monkey, and found that neuronal avalanches and thermodynamic indicators of criticality strongly depend on collective synchrony among neurons, LFP fluctuations, and behavioral state. We found that synchronized states are associated to criticality, large dynamical repertoire and prolonged epochs of eye closure, while desynchronized states are associated to sub-criticality, reduced dynamical repertoire, and eyes open conditions. Our results show that criticality in cortical dynamics is not stationary, but fluctuates during anesthesia and between different vigilance states.

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Language(s): eng - English
 Dates: 2016-12-082017-04-262017-05-24
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1371/journal.pcbi.1005543
PMC: PMC5464673
PMID: 28542191
Other: eCollection 2017
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Project name : -
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Funding program : -
Funding organization : Centre national de la recherche scientifique (CNRS)
Project name : Fast Analog Computing with Emergent Transient States - Initial Training Network / FACETS-ITN
Grant ID : 237955
Funding program : Funding Programme 7
Funding organization : European Commission (EC)
Project name : Simultaneous MEG or fMRI And INtracranial EEG / SEMAINE
Grant ID : -
Funding program : -
Funding organization : European Commission (EC)
Project name : -
Grant ID : IJCI-2014-21066
Funding program : Juan de la Cierva Fellowship
Funding organization : Spanish Research Agency (AEI)
Project name : Brain-inspired multiscale computation in neuromorphic hybrid systems / BRAINSCALES
Grant ID : 269921
Funding program : Funding Programme 7
Funding organization : European Commission (EC)
Project name : The Human Brain Project / HBP
Grant ID : 604102
Funding program : Funding Programme 7
Funding organization : European Commission (EC)
Project name : -
Grant ID : 01GQ0420 ; 01GQ0830
Funding program : -
Funding organization : German Federal Ministry of Education and Research (BMBF)
Project name : The Dynamical and Structural Basis of Human Mind Complexity: Segregation and Integration of Information and Processing in the Brain / DYSTRUCTURE
Grant ID : 295129
Funding program : Funding Programme 7
Funding organization : European Commission (EC)
Project name : Spanish National Project Complexity of Brain States
Grant ID : PSI2016-75688-P
Funding program : -
Funding organization : Spanish Research Agency (AEI) and the European Regional Development Fund (ERDF)
Project name : Human Brain Project Specific Grant Agreement 1 / HBP SGA1
Grant ID : 720270
Funding program : Horizon 2020
Funding organization : European Commission (EC)

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Title: PLoS Computational Biology
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 13 (5) Sequence Number: e1005543 Start / End Page: - Identifier: ISSN: 1553-734X
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000017180_1