Posterior parietal cortex evaluates visuoproprioceptive congruence based on brief visual information.

ABSTRACT: To represent one's upper limbs for action, the brain relies on a combined position estimate based on visual and proprioceptive information. Monkey neurophysiology and human brain imaging suggest that the underlying operations are implemented in a network of fronto-parietal and occipitotemporal cortical areas. Recently, a potential hierarchical arrangement of these areas has been proposed, emphasizing the posterior parietal cortex (PPC) in early multisensory comparison and integration. Here, we used functional magnetic resonance imaging (fMRI) and a virtual reality-based setup to briefly (0.5 s) present healthy human participants photorealistic virtual hands, of matching or nonmatching anatomical side, or objects at the same or a different location than their real hidden left or right hand.

SUBMITTER: Limanowski J 

PROVIDER: S-EPMC5709509 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature