Parabolic avalanche scaling in the synchronization of cortical cell assemblies.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
03 05 2023
03 05 2023
Historique:
received:
21
01
2022
accepted:
07
04
2023
medline:
5
5
2023
pubmed:
4
5
2023
entrez:
3
5
2023
Statut:
epublish
Résumé
Neurons in the cerebral cortex fire coincident action potentials during ongoing activity and in response to sensory inputs. These synchronized cell assemblies are fundamental to cortex function, yet basic dynamical aspects of their size and duration are largely unknown. Using 2-photon imaging of neurons in the superficial cortex of awake mice, we show that synchronized cell assemblies organize as scale-invariant avalanches that quadratically grow with duration. The quadratic avalanche scaling was only found for correlated neurons, required temporal coarse-graining to compensate for spatial subsampling of the imaged cortex, and suggested cortical dynamics to be critical as demonstrated in simulations of balanced E/I-networks. The corresponding time course of an inverted parabola with exponent of χ = 2 described cortical avalanches of coincident firing for up to 5 s duration over an area of 1 mm
Identifiants
pubmed: 37137888
doi: 10.1038/s41467-023-37976-x
pii: 10.1038/s41467-023-37976-x
pmc: PMC10156782
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, N.I.H., Intramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
2555Subventions
Organisme : Intramural NIH HHS
ID : ZIA MH002797
Pays : United States
Organisme : Intramural NIH HHS
ID : ZIA MH002971
Pays : United States
Organisme : NINDS NIH HHS
ID : U19 NS107464
Pays : United States
Informations de copyright
© 2023. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.
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