Interhemispheric interplay between the left and right premotor cortex during grasping as assessed by dynamic causal modelling.

ABSTRACT: Research on the contribution of the ipsilateral hemisphere to unilateral movements, and how it is mediated by transcallosal connections, has so far provided contradictory findings. By using dynamic causal modelling (DCM) and Parametric Empirical Bayes analyses applied to fMRI data, we sought to describe effective connectivity during pantomimed and imagined right-hand grasping within the grasping network, namely the anterior intraparietal sulcus, ventral and dorsal (PMd) premotor cortex, supplementary motor area and primary motor cortex (M1). The two-fold aim of the present work was to explore a) whether right and left parieto-frontal areas show similar connectivity couplings, and b) the interhemispheric dynamics between these regions across the two hemispheres. We detected a network archit

SUBMITTER: Bencivenga F 

PROVIDER: S-EPMC10042845 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature