Frequency tuning properties of ocular vestibular evoked myogenic potentials.
Loud air-conducted sound or bone-conducted vibration produces vestibular-dependent electromyographic responses both in the cervical muscles (cervical vestibular evoked myogenic potentials) and in the extraocular muscles (ocular vestibular evoked myogenic potentials; oVEMPs). Although previous frequency tuning measurements of cervical vestibular evoked myogenic potentials have provided important information for a clinical application, those of oVEMPs have rarely been studied. We explored the frequency tuning properties of oVEMPs in 12 healthy participants. Our results indicate that the best frequencies of the oVEMPs to air-conducted sound and bone-conducted vibration are 500 and 250 Hz, respectively. The difference in the best frequencies between the two stimuli may originate from the difference in the end organs (saccule or utricle), preferentially activated by each stimulus.
Chihara
Yasuhiro
Y
Department of Otolaryngology-Head and Neck Surgery, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan. y-chihara@umin.ac.jp
Iwasaki
Shinichi
S
Fujimoto
Chisato
C
Ushio
Munetaka
M
Yamasoba
Tatsuya
T
Murofushi
Toshihisa
T
D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D000704:Analysis of Variance; D001844:Bone Conduction / Q000502:physiology; D004576:Electromyography / Q000379:methods; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D009801:Oculomotor Muscles / Q000502:physiology*; D010812:Physical Stimulation / Q000379:methods; D011571:Psychoacoustics; D011601:Psychophysics; D011930:Reaction Time / Q000502:physiology; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*; D013016:Sound; D014724:Vestibular Function Tests; D014722:Vestibule, Labyrinth / Q000502:physiology*; D014732:Vibration