Sensitivity of transient evoked and distortion product otoacoustic emissions to the direct effects of noise on the human cochlea.

Audiology : official organ of the International Society of Audiology Pub Date : 1999-01-01 DOI:10.3109/00206099909073001

B M Vinck, P B Van Cauwenberge, L Leroy, P Corthals

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引用次数: 131

Abstract

Measurement of otoacoustic emissions (OAEs) has been proposed as a sensitive test to reliably assess the effects of noise exposure. The present study in humans was designed to evaluate the sensitivity and applicability of transient evoked OAEs (TEOAEs) and 2f1-f2 distortion product OAEs (DPOAEs) as quantitative indices of the functional integrity of the outer hair cells (OHC) during growth of and recovery from temporary threshold shift (TTS). This was examined in two different groups of volunteers by measuring the per- and post-stimulatory effects of a one hour BBN and an on-site five hour exposure to loud music from a discotheque. The results of both experiments show consistent growth and recovery patterns for both DPOAEs and TEOAEs. For TEOAEs, both the reproducibility scores and signal to noise ratio values for the 4 kHz frequency band exhibited the greatest sensitivity. The DPOAEs, on the other hand, showed the greatest sensitivity between 2 and 5.5 kHz. Thus, both the TEOAEs and DPOAEs have a great potential in the detection of TTS after noise exposure.

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瞬态诱发和畸变产物耳声发射对噪声对人耳蜗直接影响的敏感性。

耳声发射(oae)的测量已被提出作为一种敏感的测试，以可靠地评估噪声暴露的影响。本研究旨在评价瞬时诱发oae (teoae)和2f1-f2失真产物oae (dpoae)作为外毛细胞(OHC)在临时阈值移位(TTS)生长和恢复过程中功能完整性的定量指标的敏感性和适用性。研究人员对两组不同的志愿者进行了研究，分别测量了一小时BBN和五小时迪斯科舞厅嘈杂音乐的刺激前后效果。实验结果表明，dpoae和teoae的生长和恢复模式一致。对于teoae, 4 kHz频段的再现性评分和信噪比值都表现出最大的灵敏度。另一方面，dpoae在2和5.5 kHz之间表现出最大的灵敏度。因此，teoae和dpoae在噪声暴露后的TTS检测中具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Audiology : official organ of the International Society of Audiology

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