Smith R L
Acta Otolaryngol. 1985 Jul-Aug;100(1-2):1-12. doi: 10.3109/00016488509108580.
The effects of sound frequency, intensity, and duration on responses of cochlear-nerve fibers and inner hair cells (IHCs) are reviewed and compared. The frequency selectivity observed in the nerve is already present in the IHC receptor potential but synaptic transmission appears to influence some other properties of the nerve response. First, the average rate-intensity function of a nerve fiber spans a smaller operating range than the IHC input-output characteristic. However, nerve fibers with different sensitivities can innervate the same IHC and respond over different regions of its characteristic. Second, adaptation is present in the nerve-fiber response but not observed in the IHC. It appears to result from a decrease in synaptic transmission and produces temporal contrast and a decrease in operating range. Interactions among the various effects have important influences on the spatiotemporal pattern of cochlear-nerve responses to complex stimuli.
本文综述并比较了声音频率、强度和持续时间对耳蜗神经纤维及内毛细胞（IHC）反应的影响。在神经中观察到的频率选择性在IHC受体电位中已然存在，但突触传递似乎会影响神经反应的其他一些特性。首先，神经纤维的平均发放率-强度函数所覆盖的工作范围比IHC的输入-输出特性范围更小。然而，具有不同敏感度的神经纤维可以支配同一个IHC，并在其特性的不同区域做出反应。其次，神经纤维反应中存在适应性，但在IHC中未观察到。它似乎是由突触传递的减少导致的，并产生时间对比度和工作范围的减小。各种效应之间的相互作用对耳蜗神经对复杂刺激的时空反应模式有重要影响。
