정상인에서 외안근 전정유발근전위의 특성: 경부 전정유발근전위와의 비교 연구 (Ocular Vestibular Evoked Myogenic Potential in Healthy Subjects: A Comparative Study with Cervical Vestibular Evoked Myogenic Potential)

서지정보

· 발행기관 : 대한이비인후과학회
· 수록지 정보 : 대한이비인후-두경부외과학회지 / 52권 / 12호 / 968 ~ 973페이지
· 저자명 : 고일주, 홍성광, 장은석, 이효정, 김형종

초록

Background and Objectives While vestibular evoked myogenic potentials (VEMPs) can be
measured from extra-ocular muscle as well as cervical muscle, there are uncertainties about the
patterns and discomfort level of ocular vestibular evoked myogenic potentials (oVEMPs). This
study is to identify the properties of oVEMPs parameters and degree of subjective discomfort
when compared to cervical vestibular evoked myogenic potentials (cVEMPs) in healthy subjects.
Subjects and Method Twenty volunteers with normal hearing were enrolled in this study.
The oVEMPs were recorded from electrodes placed beneath the eyes using ipsilateral and
contralateral acoustic stimulation with 500 Hz short tone bursts with subjects in sitting position
and maximal upward gaze. The cVEMPs were measured using 500 Hz short tone bursts with
subject in supine position and their head elevated and turned away from the test side. The latency,
interlatency and interamplitude of oVEMPs responses were compared to those of cVEMPs.
The subjective discomfort levels of oVEMPs and cVEMPs were compared using a questionnaire
survey.
Results The cVEMPs appeared as positive-negative biphasic responses in all 40 ears
whereas oVEMPs were measured in 27 ears (67.5%) with ipsilateral stimulation and 20 ears
(85%) with contralateral stimulation which appeared as negative-positive biphasic responses.
The oVEMPs had smaller amplitude than the cVEMPs. The oVEMPs thresholds tended to have
higher level than the cVEMPs thresholds. The 18 subjects (90%) reported that the discomfort
level of oVEMPs measurement was lower or equal to that of cVEMPs measurement.
Conclusion oVEMPs test may be used as a complementary and comfortable diagnostic
tool for evaluating the integrity of vestibular-ocular system.

영어초록

Background and Objectives While vestibular evoked myogenic potentials (VEMPs) can be
measured from extra-ocular muscle as well as cervical muscle, there are uncertainties about the
patterns and discomfort level of ocular vestibular evoked myogenic potentials (oVEMPs). This
study is to identify the properties of oVEMPs parameters and degree of subjective discomfort
when compared to cervical vestibular evoked myogenic potentials (cVEMPs) in healthy subjects.
Subjects and Method Twenty volunteers with normal hearing were enrolled in this study.
The oVEMPs were recorded from electrodes placed beneath the eyes using ipsilateral and
contralateral acoustic stimulation with 500 Hz short tone bursts with subjects in sitting position
and maximal upward gaze. The cVEMPs were measured using 500 Hz short tone bursts with
subject in supine position and their head elevated and turned away from the test side. The latency,
interlatency and interamplitude of oVEMPs responses were compared to those of cVEMPs.
The subjective discomfort levels of oVEMPs and cVEMPs were compared using a questionnaire
survey.
Results The cVEMPs appeared as positive-negative biphasic responses in all 40 ears
whereas oVEMPs were measured in 27 ears (67.5%) with ipsilateral stimulation and 20 ears
(85%) with contralateral stimulation which appeared as negative-positive biphasic responses.
The oVEMPs had smaller amplitude than the cVEMPs. The oVEMPs thresholds tended to have
higher level than the cVEMPs thresholds. The 18 subjects (90%) reported that the discomfort
level of oVEMPs measurement was lower or equal to that of cVEMPs measurement.
Conclusion oVEMPs test may be used as a complementary and comfortable diagnostic
tool for evaluating the integrity of vestibular-ocular system.

참고자료

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