Criticality Creates a Functional Platform for Network Transitions Between Internal and External Processing Modes in the Human Brain.

ABSTRACT: Continuous switching between internal and external modes in the brain appears important for generating models of the self and the world. However, how the brain transitions between these two modes remains unknown. We propose that a large synchronization fluctuation of brain networks, emerging only near criticality (i.e., a balanced state between order and disorder), spontaneously creates temporal windows with distinct preferences for integrating the network's internal information or for processing external stimuli. Using a computational model, electroencephalography (EEG) analysis, and functional magnetic resonance imaging (fMRI) analysis during alterations of consciousness in humans, we report that synchronized and incoherent networks, respectively, bias toward internal and external inform

SUBMITTER: Kim M 

PROVIDER: S-EPMC8657781 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature