Cervical vestibular evoked myogenic potentials (cVEMPs): usefulness in clinical neuro-otology
34 slide(s) – 00:15:22– English –2010-09-26
Testing vestibular evoked myogenic potentials (VEMPs) may be the most important new clinical test for evaluation of vestibular function developed during the past 100 years since the introduction of the caloric test. VEMPs are easily recordable and therefore suitable for everyday testing in clinical neuro-otology. VEMPs in response to air-conducted sound stimulation using surface electrodes over the sternocleidomastoid muscles (cervical VEMPs=cVEMPs) reveal saccular function, inferior vestibular nerve function, and vestibulocollic connections. At present, VEMPs are of clinical importance for estimating the severity of peripheral vestibular damage due to different pathophysiologic processes such as Menière’s disease, vestibular neuritis, and vestibular Schwannoma. VEMPs can also be used to document vestibular hypersensitivity to sounds (Tullio phenomenon). In addition, VEMP testing constitutes an electrophysiological method that is able to detect subclinical lesions in central vestibular pathways.