Unformatted text preview: membrane. It works to a first approximation, but the tuning of the auditory nerve fibers is far too narrow to be explained only by this property of the basilar membrane. There are efferents that, when they activate the outer hair cells, these hair cells move; this in turn moves the basilar membrane. There is believed to be a feedback system whereby the activity of hair cells activated most strongly due to von Bekesy's mechanics feedback through the outer hair cells to amplify the movements of the basilar membrane at this locale, sharpening the tuning of those hair cells--amplyifying their response but not that of adjacent hair cells responding better to other frequencies....
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This note was uploaded on 05/12/2010 for the course BIO 365R taught by Professor Draper during the Spring '08 term at University of Texas.
- Spring '08