Complex pattern of facial remapping in somatosensory cortex following congenital but not acquired hand loss.

ABSTRACT: Cortical remapping after hand loss in the primary somatosensory cortex (S1) is thought to be predominantly dictated by cortical proximity, with adjacent body parts remapping into the deprived area. Traditionally, this remapping has been characterised by changes in the lip representation, which is assumed to be the immediate neighbour of the hand based on electrophysiological research in non-human primates. However, the orientation of facial somatotopy in humans is debated, with contrasting work reporting both an inverted and upright topography. We aimed to fill this gap in the S1 homunculus by investigating the topographic organisation of the face. Using both univariate and multivariate approaches we examined the extent of face-to-hand remapping in individuals with a congenital and acquire

SUBMITTER: Root V 

PROVIDER: S-EPMC9851617 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature