Geisler C D
Department of Neurophysiology, University of Wisconsin-Madison 53706.
Hear Res. 1991 Jul;54(1):105-17. doi: 10.1016/0378-5955(91)90140-5.
A model of cochlear vibrations based upon motile outer hair cells (OHCs) has been developed using physiologically demonstrated phenomena. Rapid longitudinally directed OHC forces are connected in such a way as to form a negative-feedback system. The responses at the higher frequencies (greater than 1 kHZ) are quite realistic: they have properly shaped amplitude curves with large tip-to-tail ratios (30-50 dB), Q10's of 2-6, and 'shoulders' at frequencies an octave below the resonant frequency. The phases are also quite realistic, though asymptoting at somewhat lower values (about -6 pi radians) than observed physiologically. The responses in the apical section are not so realistic. The form of the OHC force is physically unrealizable, but realizable forms are discussed.
基于活动外毛细胞（OHC）构建了一种耳蜗振动模型，该模型利用了生理学已证实的现象。快速纵向作用的OHC力以形成负反馈系统的方式连接起来。在较高频率（大于1千赫兹）下的响应相当逼真：它们具有形状合适的振幅曲线，峰谷比大（30 - 50分贝），Q10值为2 - 6，并且在低于共振频率一个八度的频率处有“肩部”。相位也相当逼真，尽管渐近值比生理学观察到的略低（约 - 6π弧度）。顶端部分的响应不太逼真。OHC力的形式在物理上无法实现，但讨论了可实现的形式。
