지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 89 - 95 (7page)
이용수
초록· 키워드
오류제보하기
Changes in distortion product otoacoustic emission (DPOAE)caused by contralateral suppression (CS) allow the function of the auditory efferent systemto be evaluated. Parameters affording maximum CS are preferred in terms of clinical application. Our objective was to evaluate the effects of primary levels and frequencies on DPOAEmediatedCS. Subjects and Methods: Sixteen subjects with normal hearing participated. DPOAEs were recorded with and without contralateral acoustic stimulation; we deliveredbroadband noise of 65 dB SPL at f2 frequencies between 1,000 Hz and 6,727 Hz, at 8 pt/octave. The L2 was varied between 40 dB SPL and 80 dB SPL in 10-dB steps. Results: L2did not significantly affect DPOAE-mediated CS. Higher L2 levels significantly reduced thefine structure depth of both the baseline and suppressed DPOAE datasets. The amount ofCS was greatly affected by the f2 frequency; lower and higher frequency ranges affordedsignificantly stronger suppression than did mid-frequencies within the studied range. Conclusions:Our findings suggest that DPOAE CS should be measured over a wide range offrequencies as the amount of CS seems to be highly dependent on f2. The use of a higherL2 level may be optimal when it is sought to evoke strong DPOAE-mediated suppressionwhile simultaneously minimizing DPOAE fine structure. Our findings may assist in optimizationof clinical procedures evaluating the integrity of the auditory efferent system.
목차
등록된 정보가 없습니다.
참고문헌 (30)
참고문헌 신청
Kemp DT / 1978 / Stimulated acoustic emissions from within the human auditory system / J Acoust Soc Am 64:1386~1391
Mauermann M / 1999 / Evidence for the distortion product frequency place as a source of distortion product otoacoustic emission (DPOAE) fine structure in humans. I. Fine structure and higher-order DPOAE as a function of the frequency ratio f2/f1 / J Acoust Soc Am 106:3473~3483
Dhar S / 2005 / The effect of stimulusfrequency ratio on distortion product otoacoustic emission components / J Acoust Soc Am 117:3766~3776
Moulin A / 1993 / Contralateral auditory stimulation alters acoustic distortion products in humans / Hear Res 65:193~210
Liberman MC / 1996 / The ipsilaterally evoked olivocochlear reflex causes rapid adaptation of the 2f1-f2 distortion product otoacoustic emission / J Acoust Soc Am 99:3572~3584
Mauermann M / 1999 / Evidence for the distortion product frequency place as a source of distortion product otoacoustic emission (DPOAE) fine structure in humans. I. Fine structure and higher-order DPOAE as a function of the frequency ratio f2/f1 / J Acoust Soc Am 106:3473~3483
Dhar S / 2005 / The effect of stimulusfrequency ratio on distortion product otoacoustic emission components / J Acoust Soc Am 117:3766~3776
Moulin A / 1993 / Contralateral auditory stimulation alters acoustic distortion products in humans / Hear Res 65:193~210
Liberman MC / 1996 / The ipsilaterally evoked olivocochlear reflex causes rapid adaptation of the 2f1-f2 distortion product otoacoustic emission / J Acoust Soc Am 99:3572~3584
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