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动物心理声学中的临界带宽和临界比率:以灰鼠数据为例

Critical bands and critical ratios in animal psychoacoustics: an example using chinchilla data.

作者信息

Yost William A, Shofner William P

机构信息

Speech and Hearing Science, Arizona State University, Tempe, Arizona 85287-0102, USA.

出版信息

J Acoust Soc Am. 2009 Jan;125(1):315-23. doi: 10.1121/1.3037232.

Abstract

This paper suggests that critical ratios obtained in noise-masked tone studies are not good indicators of critical bandwidths obtained in both human and nonhuman animal subjects. A probe-tone detection study using chinchilla subjects suggests that they may be broadband processors in detection tasks as opposed to human subjects who use narrow-band, critical-band processing. If chinchilla and other nonhuman animal subjects are wideband processors, this can partially explain why their critical ratios are significantly greater than those measured in human subjects. Thus, large critical ratios obtained for nonhuman animals may indicate processing inefficiency rather than wide critical bands.

摘要

本文表明,在噪声掩蔽音调研究中获得的临界比率并非人类和非人类动物受试者临界带宽的良好指标。一项使用龙猫受试者的探测音检测研究表明,在检测任务中,它们可能是宽带处理器,这与使用窄带、临界带处理的人类受试者不同。如果龙猫和其他非人类动物受试者是宽带处理器,这可以部分解释为什么它们的临界比率显著高于在人类受试者中测得的比率。因此,非人类动物获得的大临界比率可能表明处理效率低下而非临界带宽宽。

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