A cochlear model using feedback from motile outer hair cells.

C D Geisler

doi:10.1016/0378-5955(91)90140-5

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A cochlear model using feedback from motile outer hair cells.

C D Geisler

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Abstract

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 (greater than 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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Acoustic Stimulation Animals Basilar Membrane Biomechanical Phenomena Cochlea Feedback Hair Cells, Auditory Models, Biological Vibration Journal Article Research Support, U.S. Gov't, P.H.S.

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C D Geisler. 1991. A cochlear model using feedback from motile outer hair cells.. https://doi.org/10.1016/0378-5955(91)90140-5

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