A model for the nonlinear mechanism responsible for cochlear amplification

A nonlinear model for the mechanism responsible for the amplification of the sound wave in the ear is derived using the geometric and material properties of the system. The result is a nonlinear beam equation, with the nonlinearity appearing in a coefficient of the equation. Once derived, the beam...

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Main Authors: Kimberly Fessel, Mark H. Holmes
Format: Article
Language:English
Published: AIMS Press 2014-08-01
Series:Mathematical Biosciences and Engineering
Subjects:
Online Access:https://www.aimspress.com/article/doi/10.3934/mbe.2014.11.1357
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author Kimberly Fessel
Mark H. Holmes
author_facet Kimberly Fessel
Mark H. Holmes
author_sort Kimberly Fessel
collection DOAJ
description A nonlinear model for the mechanism responsible for the amplification of the sound wave in the ear is derived using the geometric and material properties of the system. The result is a nonlinear beam equation, with the nonlinearity appearing in a coefficient of the equation. Once derived, the beam problem is analyzed for various loading conditions. Based on this analysis it is seen that the mechanism is capable of producing a spatially localized gain, as required by any amplification mechanism, but it is also capable of increasing the spatial contrast in the signal.
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spelling doaj-art-05eafef7de5e4729aaa9bb635b5afd702025-01-24T02:29:00ZengAIMS PressMathematical Biosciences and Engineering1551-00182014-08-011161357137310.3934/mbe.2014.11.1357A model for the nonlinear mechanism responsible for cochlear amplificationKimberly Fessel0Mark H. Holmes1Department of Mathematical Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180-3590Department of Mathematical Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180-3590A nonlinear model for the mechanism responsible for the amplification of the sound wave in the ear is derived using the geometric and material properties of the system. The result is a nonlinear beam equation, with the nonlinearity appearing in a coefficient of the equation. Once derived, the beam problem is analyzed for various loading conditions. Based on this analysis it is seen that the mechanism is capable of producing a spatially localized gain, as required by any amplification mechanism, but it is also capable of increasing the spatial contrast in the signal.https://www.aimspress.com/article/doi/10.3934/mbe.2014.11.1357basilar membranecochlear amplificationnonlinear beam.
spellingShingle Kimberly Fessel
Mark H. Holmes
A model for the nonlinear mechanism responsible for cochlear amplification
Mathematical Biosciences and Engineering
basilar membrane
cochlear amplification
nonlinear beam.
title A model for the nonlinear mechanism responsible for cochlear amplification
title_full A model for the nonlinear mechanism responsible for cochlear amplification
title_fullStr A model for the nonlinear mechanism responsible for cochlear amplification
title_full_unstemmed A model for the nonlinear mechanism responsible for cochlear amplification
title_short A model for the nonlinear mechanism responsible for cochlear amplification
title_sort model for the nonlinear mechanism responsible for cochlear amplification
topic basilar membrane
cochlear amplification
nonlinear beam.
url https://www.aimspress.com/article/doi/10.3934/mbe.2014.11.1357
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