Shared neural representations of tactile roughness intensities by somatosensation and touch observation using an associative learning method.

ABSTRACT: Previous human fMRI studies have reported activation of somatosensory areas not only during actual touch, but also during touch observation. However, it has remained unclear how the brain encodes visually evoked tactile intensities. Using an associative learning method, we investigated neural representations of roughness intensities evoked by (a) tactile explorations and (b) visual observation of tactile explorations. Moreover, we explored (c) modality-independent neural representations of roughness intensities using a cross-modal classification method. Case (a) showed significant decoding performance in the anterior cingulate cortex (ACC) and the supramarginal gyrus (SMG), while in the case (b), the bilateral posterior parietal cortices, the inferior occipital gyrus, and the primary motor

SUBMITTER: Kim J 

PROVIDER: S-EPMC6329784 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature