Departmental Papers (BE)

Document Type

Conference Paper

Date of this Version

September 2003

Comments

Copyright 2003 IEEE. Reprinted from Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society 2003, Volume 3, pages 2013-2016.
Publisher URL: http://ieeexplore.ieee.org/xpl/tocresult.jsp?isNumber=28615

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Abstract

We present a linear active cochlear model that includes the outer hair cell (OHC) forces, which are delivered onto upstream and downstream basilar membrane (BM) segments through Deiters' cells (DCs) and their phalangeal processes (PhPs). Due to the longitudinal tilt of the OHC towards the base and the oblique orientation of the PhP towards the apex, each BM segment receives both feed-forward and feed-backward OHC forces. Transverse BM fibers are actively coupled longitudinally through these bi-directional OHC forces, included in a cochlear model for the first time. We present simulation results that demonstrate large amplification and sharp tuning, and we analyze the underlying mechanism.

Keywords

outer hair cell, phalangeal process

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Date Posted: 10 November 2004

This document has been peer reviewed.