人类一阶差音的诱发反应研究。

An evoked response study of the first-order difference tone in man.

作者信息

Gorny J L, Butler R A

出版信息

Acta Otolaryngol. 1975 Jul-Aug;80(1-2):1-6. doi: 10.3109/00016487509121293.

Abstract

The amplitude of the N1-P2 component of a response evoked by a 250 Hz test stimulus presented once each 5 sec was measured. Interposed at a rate of one per sec were either 1) a 4000 Hz tone, 2) a 4000 Hz and a 4250 Hz tone presented simultaneously which generated within the ear an audible 250 Hz difference tone, or 3) a 250 Hz tone. The results indicated that the N1-P2 component when preceded by the 4000 Hz plus 4250 Hz stimulus pair was larger than when preceded by a 250 Hz tone, but smaller than when preceded by a 4000 Hz tome. Apparently the processing of the difference tone is unlike that of a sinusoid of the same frequency or that of a high frequency sinusoid which participated in the generation of the difference tone. Parallel electrophysiological data from cochlear recordings are discussed.

摘要

测量了以每5秒呈现一次的250赫兹测试刺激诱发的反应中N1 - P2成分的幅度。以每秒一次的频率插入以下刺激：1）一个4000赫兹的音调；2）一个4000赫兹和一个4250赫兹的音调同时呈现，在耳内产生一个可听见的250赫兹差频音；3）一个250赫兹的音调。结果表明，在4000赫兹加4250赫兹刺激对之前出现的N1 - P2成分大于在250赫兹音调之前出现时的情况，但小于在4000赫兹音调之前出现时的情况。显然，差频音的处理方式不同于相同频率的正弦波或参与差频音产生的高频正弦波的处理方式。文中讨论了来自耳蜗记录的平行电生理数据。