Modulatory interactions between the default mode network and task positive networks in resting-state.

ABSTRACT: The two major brain networks, i.e., the default mode network (DMN) and the task positive network, typically reveal negative and variable connectivity in resting-state. In the present study, we examined whether the connectivity between the DMN and different components of the task positive network were modulated by other brain regions by using physiophysiological interaction (PPI) on resting-state functional magnetic resonance imaging data. Spatial independent component analysis was first conducted to identify components that represented networks of interest, including the anterior and posterior DMNs, salience, dorsal attention, left and right executive networks. PPI analysis was conducted between pairs of these networks to identify networks or regions that showed modulatory interactions wit

SUBMITTER: Di X 

PROVIDER: S-EPMC4017816 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature