주시 방향에 따른 안구전정유발근전위의 변화 양상

이여진; 한수희; 하은정; 안재윤; 박가현; 정용수; 곽희붕; 박문수; 신정은; 박홍주

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자료유형: 학술저널

저자정보: 이여진 한수희 하은정 안재윤 박가현 정용수 곽희붕 박문수 신정은 박홍주

저널정보: 대한이비인후과학회 대한이비인후-두경부외과학회지 대한이비인후과학회지 두경부외과학 제52권 제3호

발행연도: 2009.1

수록면: 215 - 219 (5page)

이용수

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연구주제

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연구배경

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연구방법

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연구결과

초록· 키워드

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Background and Objectives：Recent works have demonstrated the existence of ocular vestibular evoked myogenic potentials (OVEMPs), which reflects otolith-ocular reflex. The purpose of this study was to identify an appropriate gaze position to detect OVEMPs produced by air-conducted sound stimulation in healthy subjects. Subjects and Method：Twenty four healthy subjects (35 ears) were included in this study. Surface electromyographic activity was recorded from active electrodes placed inferior to each eye. Stimulation with 500 Hz short tone bursts was used to activate the vestibular end-organs. Results：Sound stimulation evoked negative-positive biphasic responses on both ipsilateral and contralateral eyes, while responses were contralateral eye-dominant. Contralateral eye responses had higher response incidence and larger amplitudes. Altering the direction of gaze generally changed the incidence and size of the inter-peak amplitudes. The higher incidence and larger amplitudes were recorded when the eyes are directed to the superior and ipsilateral side to the sound stimulation. In that gaze position, the amplitude was 5.3 μV, the first negative peak latency was 10.5 ms and the following positive peak latency was 15.4 ms on the average. Conclusion： OVEMPs can be evoked using an air-conducted 500 Hz tone burst and are best recorded contralaterally with a upward gaze towards the source of sound stimulation. Further changes of the test parameters are needed for higher and consistent responses.

#유발전위·안구전정유발근전위·전정안반사· 구형낭 #Evoked potentials·OVEMP·Vestibulo-ocular reflex·Saccule

참고문헌 (18)

참고문헌 신청

Aw ST / 2006 / Click-evoked vestibulo-ocular reflex: Stimulus response properties in superior canal dehiscence / Neurology 66 (7) : 1079 ~ 1087

Chihara Y / 2007 / Vestibular-evoked traocular potentials by air-conducted sound: Another clinical test for vestibular function / Clin Neurophysiol 118 (12) : 2745 ~ 2751

Colebatch JG / 1994 / Myogenic potentials generated by a click-evoked vestibulocollic reflex / J Neurol Neurosurg Psychiatry 57 (2) : 190 ~ 197

Colebatch JG / 2004 / Motor unit excitability changes mediating vestibulocollic reflexes in the sternocleidomastoid muscle / Clin Neurophysiol 115 (11) : 2567 ~ 25773

Dumitru D / 1991 / AAEM Minimonograph #10: Volume conduction / Muscle Nerve 14 (7) : 605 ~ 624

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