The Impact of the Geometric Correction Scheme on MEG Functional Topology at Rest.

ABSTRACT: Spontaneous activity is correlated across brain regions in large scale networks (RSN) closely resembling those recruited during several behavioral tasks and characterized by functional specialization and dynamic integration. Specifically, MEG studies revealed a set of central regions (dynamic core) possibly facilitating communication among differently specialized brain systems. However, source projected MEG signals, due to the fundamentally ill-posed inverse problem, are affected by spatial leakage, leading to the estimation of spurious, blurred connections that may affect the topological properties of brain networks and their integration. To reduce leakage effects, several correction schemes have been proposed including the Geometric Correction Scheme (GCS) whose theory, simulations and e

SUBMITTER: Della Penna S 

PROVIDER: S-EPMC6823434 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature