Short latency vestibular evoked response to angular acceleration impulse in human beings

Vestibular evoked response (VsEP) to acceleration stimuli were recorded in experimental animals and in human beings by scalp electrodes. The stimuli are angular acceleration impulses (up to 30,000 deg/sec2) transmitted to the skull by special devices. The short latency vestibular evoked response consisted of several waves during the first 10 msec. The first two waves (P1 and P2), which are the most consistent, have been shown in cats to originate from the vestibular nerve and nucleus, respectively. The middle latency response is believed to be of myogenic origin. It is hoped that the recording of VsEP in human beings will enable the localization of the site of lesion in vertiginous patients.