Responses of single units in the cat cochlear nucleus to sinusoidal amplitude modulation of tones and noise: Linearity and relation to speech perception
作者:
Henry R. Hirsch,
Mary Morton Gibson,
期刊:
Journal of Neuroscience Research
(WILEY Available online 1976)
卷期:
Volume 2,
issue 5‐6
页码: 337-356
ISSN:0360-4012
年代: 1976
DOI:10.1002/jnr.490020502
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: neural units;cochlear nucleus;amplitude modulation;audition;nonlinearity;speech
数据来源: WILEY
摘要:
AbstractResponses to the sinusoidal modulation envelopes of amplitude‐modulated tone and noise carriers were recorded from single units in the cochlear nucleus of the cat. The unit discharges were synchronized to the peaks of the modulation envelope. Population‐averaged firing rates were independent of the modulation index of the stimulus. Temporal firing patterns, as represented by the shapes and magnitudes of modulation‐cycle histograms, were strongly dependent on stimulus intensity and modulation index. Nonlinear nonsinusoidal responses to sinusoidal modulation envelopes were observed, but only at very high values of sound intensity. These and other results are discussed in the context of psychological studies concerning the perception of speech inform
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