CRITICAL BANDS FOLLOWING THE SELECTIVE DESTRUCTION OF COCHLEAR INNER AND OUTER HAIR-CELLS

被引:28
作者
NIENHUYS, TGW [1 ]
CLARK, GM [1 ]
机构
[1] UNIV MELBOURNE,DEPT OTOLARYNGOL,CHILD DEAFNESS RES LAB,PARKVILLE 3052,VICTORIA,AUSTRALIA
基金
英国医学研究理事会;
关键词
D O I
10.3109/00016487909137179
中图分类号
R76 [耳鼻咽喉科学];
学科分类号
100213 ;
摘要
Critical bandwidths and absolute intensity thresholds were measured in cats before and after kanamycin treatment which induced selective inner and outer hair cell losses. Hair cell losses were measured from cochleograms constructed from surface preparations of the organ of Corti. Results suggested that, for the test frequencies and stimulus intensities employed, critical bandwidths were not affected for frequencies tonotopically located in cochlear regions where only outer hair cells were lost. Critical bands were widened or not measurable only when inner hair cell losses exceeding 40% were also associated with complete loss of outer hair cells. The experiment suggests that cochlear frequency selectivity can be mediated by inner hair cells alone. © 1979 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.
引用
收藏
页码:350 / 358
页数:9
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