A probabilistic atlas of finger dominance in the primary somatosensory cortex.

ABSTRACT: With the advent of ultra-high field (7T), high spatial resolution functional MRI (fMRI) has allowed the differentiation of the cortical representations of each of the digits at an individual-subject level in human primary somatosensory cortex (S1). Here we generate a probabilistic atlas of the contralateral SI representations of the digits of both the left and right hand in a group of 22 right-handed individuals. The atlas is generated in both volume and surface standardised spaces from somatotopic maps obtained by delivering vibrotactile stimulation to each distal phalangeal digit using a travelling wave paradigm. Metrics quantify the likelihood of a given position being assigned to a digit (full probability map) and the most probable digit for a given spatial location (maximum probabilit

SUBMITTER: O'Neill GC 

PROVIDER: S-EPMC7339146 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature