Meddis Ray, O'Mard Lowel P
Department of Psychology, Essex University, Colchester, United Kingdom.
J Acoust Soc Am. 2006 Dec;120(6):3861-9. doi: 10.1121/1.2372595.
A computational model of nervous activity in the auditory nerve, cochlear nucleus, and inferior colliculus is presented and evaluated in terms of its ability to simulate psychophysically-measured pitch perception. The model has a similar architecture to previous autocorrelation models except that the mathematical operations of autocorrelation are replaced by the combined action of thousands of physiologically plausible neuronal components. The evaluation employs pitch stimuli including complex tones with a missing fundamental frequency, tones with alternating phase, inharmonic tones with equally spaced frequencies and iterated rippled noise. Particular attention is paid to differences in response to resolved and unresolved component harmonics. The results indicate that the model is able to simulate qualitatively the related pitch-perceptions. This physiological model is similar in many respects to autocorrelation models of pitch and the success of the evaluations suggests that autocorrelation models may, after all, be physiologically plausible.
本文提出了一种关于听神经、耳蜗核和下丘神经活动的计算模型，并根据其模拟心理物理学测量的音高感知的能力进行了评估。该模型与先前的自相关模型具有相似的架构，只是自相关的数学运算被数千个生理上合理的神经元组件的联合作用所取代。评估采用了音高刺激，包括具有缺失基频的复合音、具有交替相位的音调、频率等距的非谐波音和迭代波纹噪声。特别关注对已分辨和未分辨的分量谐波的响应差异。结果表明，该模型能够定性地模拟相关的音高感知。这种生理模型在许多方面与音高的自相关模型相似，评估的成功表明自相关模型毕竟可能在生理上是合理的。
