Hafter E R, Dye R H
J Acoust Soc Am. 1983 Feb;73(2):644-51. doi: 10.1121/1.388956.
Listeners were asked to detect interaural differences of time in trains of 4000-Hz clicks as the interclick interval (ICI) was varied from 10 to 1 ms and the number of clicks in a train (n) was varied from 1 to 32. Plots of log interaural threshold versus log n produce straight lines whose absolute slopes decrease toward 0.0 with decreasing ICI. These results are shown to fit a saturation model which argues that as the click rate increases, the evoked neural activity moves from a response that is tonic toward one which is more phasic. The need to postulate neural compression is based in part on the fact that the three most commonly cited models of the limitations imposed by high frequency--reduction in the depth of modulations due to narrow-band filtering within the auditory system, neural refractoriness, and nonindependence of successive samples of internal noise--do not predict a change in slope with rate.
当4000赫兹的滴答声序列中的滴答间隔（ICI）从10毫秒变化到1毫秒，且序列中的滴答声数量（n）从1变化到32时，要求听众检测两耳之间的时间差异。对数耳间阈值与对数n的关系图产生直线，其绝对斜率随着ICI的减小而向0.0减小。这些结果表明符合一个饱和模型，该模型认为随着滴答率的增加，诱发的神经活动从一种紧张性反应转变为更具相位性的反应。假设神经压缩的必要性部分基于这样一个事实，即高频所施加限制的三种最常被引用的模型——由于听觉系统内的窄带滤波导致调制深度的降低、神经不应期以及内部噪声连续样本的非独立性——无法预测斜率随速率的变化。
