Mapping the voxel-wise effective connectome in resting state FMRI.

ABSTRACT: A network approach to brain and dynamics opens new perspectives towards understanding of its function. The functional connectivity from functional MRI recordings in humans is widely explored at large scale, and recently also at the voxel level. The networks of dynamical directed connections are far less investigated, in particular at the voxel level. To reconstruct full brain effective connectivity network and study its topological organization, we present a novel approach to multivariate Granger causality which integrates information theory and the architecture of the dynamical network to efficiently select a limited number of variables. The proposed method aggregates conditional information sets according to community organization, allowing to perform Granger causality analysis avoiding

SUBMITTER: Wu GR 

PROVIDER: S-EPMC3771991 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature