Physiological Aspects of Vestibular Schwannoma Treated with Radiosurgery

Abstract

Disequilibrium is one of the most popular symptoms of vestibular schwannoma, next to the hearing disturbance and tinnitus. In our institute, the cases with vestibular schwannoma were concurrently investigated with neurophysiological studies like pure tone hearing of Gardner-Robertson method (GR), auditory brainstem response (ABR), vestibular evoked myogenic potential (VEMP) and Stabilometry. Among them, VEMP study gives us the most valuable informations. In fact, both qualitative and quantitative improvements of VEMP have been verified in association with the symptomatic recovery of disequilibrium.