A COCHLEAR MODEL USING FEEDBACK FROM MOTILE OUTER HAIR-CELLS

被引：45
|
作者：
GEISLER, CD
机构：
[1] Department of Neurophysiology, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI
来源：
HEARING RESEARCH | 1991年 / 54卷 / 01期
关键词：
COCHLEAR VIBRATION; OUTER HAIR CELL; FEEDBACK; MODEL; OTOACOUSTIC EMISSIONS; TUNING CURVES; MECHANICS; VIBRATIONS; SATURATION; AMPLIFIER; HEARING; PHASES; FORCE;
D O I：
10.1016/0378-5955(91)90140-5
中图分类号：
R36 [病理学]; R76 [耳鼻咽喉科学];
学科分类号：
100104 ; 100213 ;
摘要：
A model of cochlear vibrations based upon motile outer hair cells (OHCs) has been developed using physiologically demonstrated phenomena. Rapid longitudinally directed OHC forces are connected in such a way as to form a negative-feedback system. The responses at the higher frequencies (> 1 kHZ) are quite realistic: they have properly shaped amplitude curves with large tip-to-tail ratios (30-50 dB), Q10's of 2-6, and 'shoulders' at frequencies an octave below the resonant frequency. The phases are also quite realistic, though asymptoting at somewhat lower values (about -6-pi radians) than observed physiologically. The responses in the apical section are not so realistic. The form of the OHC force is physically unrealizable, but realizable forms are discussed.
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页码：105 / 117
页数：13
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