Specialization of the left supramarginal gyrus for hand-independent praxis representation is not related to hand dominance.

ABSTRACT: Data from focal brain injury and functional neuroimaging studies implicate a distributed network of parieto-fronto-temporal areas in the human left cerebral hemisphere as playing distinct roles in the representation of meaningful actions (praxis). Because these data come primarily from right-handed individuals, the relationship between left cerebral specialization for praxis representation and hand dominance remains unclear. We used functional magnetic resonance imaging (fMRI) to evaluate the hypothesis that strongly left-handed (right hemisphere motor dominant) adults also exhibit this left cerebral specialization. Participants planned familiar actions for subsequent performance with the left or right hand in response to transitive (e.g., "pounding") or intransitive (e.g. "waving") action

SUBMITTER: Kroliczak G 

PROVIDER: S-EPMC5036996 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature