교차음 자극이 변조 이음향방사의 잠복기에 미치는 영향

우훈영; 정상원; 조철규; 한동훈; 최찬

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자료유형: 학술저널

저자정보: 우훈영 정상원 조철규 한동훈 최찬

저널정보: 대한이비인후과학회 대한이비인후-두경부외과학회지 대한이비인후과학회지 두경부외과학 제48권 제3호

발행연도: 2005.1

수록면: 293 - 296 (4page)

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연구결과

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Background and Objectives：The auditory efferent system -Medial olivochlear bundle (MOCB)-controls the sensitivity and frequency selectivity of the cochlea and maintains the cochlea for optimal acoustic signaling. Contralateral acoustic sound stimulates the MOCB and has inhibitory effects on the sound evoked amplitude response of the cochlea. There are only a (CAS) on distortion product otoacoustic emision (DPOAE), and it has no consistent conclusion. The purpose of this study was to evaluate whether changing the latency of DPOAE by CAS could be a stable method for monitoring the function of MOCB. Subjects and Method：The change in the latencies of DPOAE after CAS were monitored in 24 normal hearing ears with f2 sweep paradigm. The CAS level was divided into two groups, one was under 65 dB SPL and other was over 65 dB SPL. Results：As f2 frequency changed from 1 kHz to 2 ± 1.87 ms to 7.29± 0.86 ms in low stimulation level (50 dB SPL) and from 10.70± 2.65 ms to 6.16± 1.59 ms in high stimulation level (75 dB SPL) There were no significant shortening on the latency of DPOAE after CAS in low stimulation level group. But in higher stimulation level group (75 dB SPL), DPOAE latency changed from 10.70± 2.65 ms to 10.12± 1.95 ms (CAS level：35 dB SL) and to 9.76± 2.97 ms (CAS level：) in 1 kHz, from 6.16± 1.59 ms to 5.96± 1.49 ms (CAS level：35 dB SL) and to 5.83± 1.28 ms (CAS level：50 dB SL) in 2 kHz. Conclusion：Changes in the latency of DPOAE after CAS is not a stable monitoring tool for the function of MOCB.

#내측 올리브 와우 신경삭·교차음 자극·변조 이음향방사 잠복기. #Medial olivochlear bundle · Contralateral acoustic stimulation· DPOAE latency.

참고문헌 (20)

참고문헌 신청

/ 1956 / Suppression of auditory nerve activity by stimulation ofefferent fibers to cochlea 19 : 424 ~ 37

/ 1978 / Auditory nerve fiber activity influenced by contralateral earsound stimulation 59 : 62 ~ 74

/ 1979 / Efferent innervation of the organ of corti:Twoseparate systems 173 : 152 ~ 5

/ 1986 / Basilar membrane measurementsand the travelling wave 22 : 147 ~ 53

/ 1987 / A fast motile response in guinea pig outer hair cells:Thecellular basis of the cochlea amplifier 388 : 323 ~ 47

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