The Acoustic Stapedius Reflex in Relation to Critical Bandwidth
作者:
Gordon Flottorp,
Gisle Djupesland,
Finn Winther,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1971)
卷期:
Volume 49,
issue 2B
页码: 457-461
ISSN:0001-4966
年代: 1971
DOI:10.1121/1.1912373
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The threshold of the acoustic stapedius reflex in man was investigated by means of changes in acoustic impedance of the ear. The contralateral ear was stimulated by using bands of noise and complex tones with various bandwidths. The experiments showed that the reflex threshold, expressed in decibelsre2.10−6N/m2, is almost constant for bandwidths less than a specific value and designated as “critical bandwidth.” When the bandwidth was further increased, a decrease in the reflex threshold at approximately 3–6 dB/oct was observed. Assuming that the stapedius reflex mechanism is loudness governed in persons with normal hearing, these findings confirm the existence of a critical bandwidth in loudness summation. In addition, the findings indicate that the basis for the critical‐band mechanism is located in the peripheral part of the auditory system, probably in the cochlea.
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