Distortion-product otoacoustic emissions measured at high frequencies in humans
Distortion-product otoacoustic emissions measured at high frequencies in humans
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DOI：
10.1121/1.1406497
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发表时间：
2001-11-01
影响因子：
2.4
通讯作者：
Siegel, JH
中科院分区：
文献类型：
--
作者：
Dreisbach, LE;Siegel, JH
在听力临床中，使用小于或等于8khz的刺激频率引起的失真产物耳声发射（dpoae）来评估中耳和耳蜗是否正常，但高频听力（> - 4khz）最容易受到耳蜗病理的影响。在更高频率的刺激下测量dpoae可能会被证明是有用的（bbb8 kHz），但在人类中很少有这样的研究报告。其他哺乳动物的dpoae已经测量到听觉灵敏度的上限。本研究的目的是比较人类受试者在高频刺激和低频刺激下引起的dpoae的一些特征。主要目标是确定导致低频dpoae行为的相同现象是否也会导致高频dpoae的行为。研究了DPOAE的生长函数、不同主频比(f（2)/f(1)）对DPOAE水平的影响以及DPOAE组延迟。由于这些行为似乎随着刺激频率的变化而平稳变化，研究表明，从2到20千赫的排放是同一生物过程的产物。(C) 2001美国声学学会。
Distortion-product otoacoustic emissions (DPOAEs) elicited with stimulus frequencies less than or equal to 8 kHz have been used in hearing clinics to assess whether the middle ear and cochlea are normal, but high-frequency hearing (>4 kHz) is most vulnerable to cochlear pathology. It might prove useful to measure DPOAEs with even higher frequency stimuli (>8 kHz), but there have been few reports of such studies in humans. DPOAEs have been measured in other mammals to the upper range of hearing sensitivity. The purpose of this study was to compare some characteristics of DPOAEs in human subjects elicited with high-frequency stimuli with those that have been extensively measured with lower-frequency stimuli. The primary goal was to establish if the same phenomenon responsible for the behavior of low-frequency DPOAEs is responsible for the behavior of high-frequency DPOAEs. Specifically, the DPOAE level with stimuli varied from 2 to 20 kHz, growth functions of DPOAEs, effects of varying the primary frequency ratio (f(2)/f(1)) on the DPOAE level, and DPOAE group delay were determined. Because the behaviors appeared to vary smoothly with stimulus frequency, the study suggests that emissions measured from 2 to 20 kHz were the product of the same biological process. (C) 2001 Acoustical Society of America.