Complex spatiotemporal oscillations emerge from transverse instabilities in large-scale brain networks.

ABSTRACT: Spatiotemporal oscillations underlie all cognitive brain functions. Large-scale brain models, constrained by neuroimaging data, aim to trace the principles underlying such macroscopic neural activity from the intricate and multi-scale structure of the brain. Despite substantial progress in the field, many aspects about the mechanisms behind the onset of spatiotemporal neural dynamics are still unknown. In this work we establish a simple framework for the emergence of complex brain dynamics, including high-dimensional chaos and travelling waves. The model consists of a complex network of 90 brain regions, whose structural connectivity is obtained from tractography data. The activity of each brain area is governed by a Jansen neural mass model and we normalize the total input received by eac

SUBMITTER: Clusella P 

PROVIDER: S-EPMC10124884 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature