Effect of stimulation repetition rate on galvanic-evoked vestibulo-collic reflexes.
CONCLUSIONS
Taking examination time and patient compliance into consideration, we propose that 5 Hz is the optimal stimulation rate of galvanic vestibular-evoked myogenic potentials for clinical use.


OBJECTIVE
To evaluate the influence of stimulation repetition rate on galvanic-evoked vestibulo-collic reflexes and to propose the optimal stimulation rate for clinical use.


METHODS
Both ears of 30 healthy adults were tested at 5 different galvanic stimulation rates (1, 3, 5, 7 and 9 Hz) in a random order.


RESULTS
Responses were evident in all 60 ears only at 5 Hz; some ears showed no response at the other frequencies. The relative amplitudes in individual ears were higher at 1, 3 and 5 Hz than at 7 and 9 Hz. Comparison of the latencies of p13g and n23g showed no significant difference among the five stimulation rates.
Ozeki
Hidenori
H
Department of Otolaryngology, University of Tokyo, Tokyo, Japan. ozk@bio.m.u-tokyo.ac.jp
Iwasaki
Shinichi
S
Murofushi
Toshihisa
T
D000328:Adult; D004576:Electromyography / Q000295:instrumentation; D005260:Female; D005712:Galvanic Skin Response / Q000502:physiology*; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000294:innervation; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*; D014722:Vestibule, Labyrinth / Q000502:physiology