vestibular cortex vestibular cortex vestibular cortex is the portion of the cerebrum which responds to input from the vestibular system. vestibular cortexthe insula of the left side, exposed by removing the opercula. (image is of left side, but there is some evidence that there may be right-sided dominance.)detailsidentifierslatincortex vestibularisneuronames1390anatomical terms of neuroanatomy the location is not well defined, but some research indicates a right hemisphere dominance. lesions of the vestibular nucleus impair function. the "temporo-peri-sylvian vestibular cortex" (tpsvc) has been proposed as an analog to parietoinsular vestibular cortex found in monkeys.