Dynamical interactions reconfigure the gradient of cortical timescales.
Brain dynamics
Cortical gradients
Cortical timescales
Dynamical networks
Edge connectivity
Journal
Network neuroscience (Cambridge, Mass.)
ISSN: 2472-1751
Titre abrégé: Netw Neurosci
Pays: United States
ID NLM: 101719149
Informations de publication
Date de publication:
2023
2023
Historique:
received:
24
04
2022
accepted:
14
07
2022
medline:
19
6
2023
pubmed:
19
6
2023
entrez:
19
6
2023
Statut:
epublish
Résumé
The functional organization of the brain is usually presented with a back-to-front gradient of timescales, reflecting regional specialization with sensory areas (back) processing information faster than associative areas (front), which perform information integration. However, cognitive processes require not only local information processing but also coordinated activity across regions. Using magnetoencephalography recordings, we find that the functional connectivity at the edge level (between two regions) is also characterized by a back-to-front gradient of timescales following that of the regional gradient. Unexpectedly, we demonstrate a reverse front-to-back gradient when nonlocal interactions are prominent. Thus, the timescales are dynamic and can switch between back-to-front and front-to-back patterns.
Identifiants
pubmed: 37334007
doi: 10.1162/netn_a_00270
pii: netn_a_00270
pmc: PMC10270712
doi:
Types de publication
Journal Article
Langues
eng
Pagination
73-85Informations de copyright
© 2022 Massachusetts Institute of Technology.
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