Kemp D T
J Acoust Soc Am. 1978 Nov;64(5):1386-91. doi: 10.1121/1.382104.
A new auditory phenomenon has been identified in the acoustic impulse response of the human ear. Using a signal averaging technique, a study has been made of the response of the closed external acoustic meatus to acoustic impulses near to the threshold of audibility. Particular attention has been paid to the waveform of the response at post excitation times in excess of 5 ms. No previous worker appears to have extended observations into this region. The response observed after about 5 ms is not a simple extension of the initial response attributable to the middle ear. The oscillatory response decay time constant was found to change from approximately 1 ms to over 12 ms at about this time. The slowly decaying response component was present in all normal ears tested, but was not present in ears with cochlear deafness. This component of the response appears to have its origin in some nonlinear mechanism probably located in the cochlea, responding mechanically to auditory stimulation, and dependent upon the normal functioning of the cochlea transduction process. A cochlear reflection hypothesis received some support from these results.
一种新的听觉现象已在人耳的声脉冲响应中被识别出来。利用信号平均技术，对闭合外耳道对接近可听阈的声脉冲的响应进行了研究。特别关注了激发后超过5毫秒时响应的波形。此前似乎没有研究人员将观察扩展到这个区域。大约5毫秒后观察到的响应并非中耳引起的初始响应的简单延续。在此期间，振荡响应衰减时间常数从大约1毫秒变为超过12毫秒。这种缓慢衰减的响应成分在所有测试的正常耳朵中都存在，但在患有耳蜗性耳聋的耳朵中不存在。该响应成分似乎起源于某种可能位于耳蜗的非线性机制，它对听觉刺激产生机械响应，并依赖于耳蜗转导过程的正常运作。耳蜗反射假说从这些结果中得到了一些支持。
