de Boer E, Kaernbach C, König P, Schillen T
Hear Res. 1986;23(1):1-7. doi: 10.1016/0378-5955(86)90171-1.
Consideration of a source of oto-acoustic emission in a cochlear model implies consideration of the types of waves that such a source can emit. One wave travels in the normal, forward, direction. As any other forward wave it undergoes little or no reflection and it eventually disappears completely because of dissipation. The other wave travels in the reverse direction and it appears to undergo appreciable reflection. In the present paper this phenomenon is studied via the use of two appropriately simplified long-wave models of the cochlea. One model, the exponential model, puts emphasis on the variation of the stiffness along the length of the basilar membrane. The second model concentrates on what happens in the region of resonance. The latter model turns out to have the largest predictive power for the problem at hand. Consideration of the flow of energy in the cochlear fluid brings forth the explanation why in the used model of the cochlea reflection conditions at the stapes have such a surprisingly small influence on the operating conditions of a potential source of emission.
在耳蜗模型中考虑耳声发射源意味着要考虑这样一个源能够发射的波的类型。一种波沿正常的向前方向传播。与任何其他向前传播的波一样，它几乎没有或没有反射，最终由于耗散而完全消失。另一种波沿相反方向传播，并且似乎经历了明显的反射。在本文中，通过使用两个适当简化的耳蜗长波模型来研究这一现象。一个模型是指数模型，它强调基底膜长度方向上刚度的变化。第二个模型关注共振区域内发生的情况。事实证明，后一个模型对当前问题具有最大的预测能力。对耳蜗内流体能量流动的考虑给出了一个解释，即为什么在所使用的耳蜗模型中，镫骨处的反射条件对潜在发射源的工作条件影响如此之小。
