Visuomotor adaptation changes tactile discrimination: an ERP study

We recorded brain activity in SI, elicited by the electrical stimulation of the right forearm during a 2PTD task (the two point distance selected according to the individual threshold) after visuomotor adaptation sessions, including normal and extended reaches. A reliable increase in brain activity was observed after the visuomotor adaptation with extended but not normal reaches. Visuomotor adaptation changes body representation and preset the tactile circuits involved in the 2TPD task via top-down links from multisensory areas in the posterior parietal cortex into the somatosensory cortex