Frequency selectivity of single auditory‐nerve fibers in response to broadband noise stimuli
作者:
Aage R. Mo/ller,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1977)
卷期:
Volume 62,
issue 1
页码: 135-142
ISSN:0001-4966
年代: 1977
DOI:10.1121/1.381495
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The tuning of single auditory nerve fibers in the rat in response to broadband noise was studied in a large sound intensity range. Pseudorandom noise was used as stimuli and the cross spectrum between a period histogram of the noise and a period of the noise was used as an approximation of the transfer function from sound to the modulation of the neural discharge rate. In units with a CF higher than 1000 Hz, the width of the cross spectra (at 10‐dB points) invariably increased as the stimulus intensity increased and the center frequency decreased. The few units studied with CF below 1000 Hz seemed to undergo somewhat less of a change in width. The cross correlograms of all fibers with a characteristic frequency (CF) below 5 kHz showed a damped oscillation the duration of which decreased as stimulus intensity was increased. The similarity between the nonlinearity shown here and that shown in measurements of basilar membrane motion using the Mössbauer effect is discussed.
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