Sisto Renata, Shera Christopher A, Moleti Arturo, Botti Teresa
Occupational Hygiene Department, INAIL.
Eaton-Peabody Laboratories, Harvard Medical School.
AIP Conf Proc. 2011;1403. doi: 10.1063/1.3658153.
Recent basilar-membrane (BM) vibration experiments show that the phase slope of the distortion product (DP) in the cochlear region in which a backward-traveling wave is expected is negative, which is typical of a forward-traveling wave, according to the predictions of quasi-linear approximate solutions of classical 1-D transmission-line cochlear models. This phase behavior has been interpreted as suggesting a strong deviation from the "classical" models of the otoacoustic emission (OAE) generation and transmission. In this paper, the DP phase inversion phenomenon is approached from a conservative point of view. The DP phase is calculated in a classical cochlear model. The main conclusion is that deviations from the classical model are not necessary to account for the observed phase behavior.
最近的基底膜（BM）振动实验表明，在预期会出现反向行波的耳蜗区域，畸变产物（DP）的相位斜率为负，根据经典一维传输线耳蜗模型的准线性近似解的预测，这是正向行波的典型特征。这种相位行为被解释为表明与耳声发射（OAE）产生和传输的“经典”模型有很大偏差。在本文中，从保守的角度探讨了DP相位反转现象。在一个经典耳蜗模型中计算了DP相位。主要结论是，无需偏离经典模型来解释观察到的相位行为。
