Department of Neuroscience and Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA.
Adv Exp Med Biol. 2013;787:263-71. doi: 10.1007/978-1-4614-1590-9_30.
The purpose of this chapter is to bring together historical and current findings that reveal the presence, influence, and operation of a type of envelope “rate-limitation.” The rate-limitation has been revealed in both monaural and binaural experiments. Specifically, there appears to be a low-pass envelope-filtering process that (1) functionally attenuates fluctuations of the envelope above about 150 Hz and (2) is not attributable to peripheral band-pass filtering. We show a variety of empirical outcomes and theoretical analyses that converge to demonstrate and to describe how this type of filtering constrains the processing of interaural temporal disparities (ITDs) conveyed by the envelopes of high-frequency stimuli in experiments concerning binaural detection. Included are recent behavioral and neurophysiological findings regarding how such filtering may vary with the center frequency of the stimulus.
本章的目的是汇集历史和当前的发现，揭示存在、影响和运作的一种类型的包络“限速”。限速在单耳和双耳实验中都有发现。具体来说，似乎有一种低通包络滤波过程，（1）在功能上衰减了 150Hz 以上的包络波动，（2）不能归因于外围带通滤波。我们展示了各种经验结果和理论分析，这些结果和分析都表明并描述了这种类型的滤波如何限制由高频刺激的包络传递的双耳时间差异（ITD）的处理，这些实验涉及双耳检测。包括最近关于这种滤波如何随刺激的中心频率而变化的行为和神经生理学发现。
