Cochlea's graded curvature effect on low frequency waves

In the ear, sound waves are processed by a membrane of graded mechanical properties that resides in the fluid-filled spiral cochlea. The role of stiffness grading as a Fourier analyzer is well known, but the role of the curvature has remained elusive. Here, we report that increasing curvature redist...

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Veröffentlicht in:	Physical review letters 2006-03, Vol.96 (8), p.088701-088701, Article 088701
Hauptverfasser:	Manoussaki, D, Dimitriadis, E K, Chadwick, R S
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Basilar Membrane - anatomy & histology Basilar Membrane - physiology Cochlea - anatomy & histology Cochlea - physiology Humans Labyrinthine Fluids - physiology Models, Biological
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description	In the ear, sound waves are processed by a membrane of graded mechanical properties that resides in the fluid-filled spiral cochlea. The role of stiffness grading as a Fourier analyzer is well known, but the role of the curvature has remained elusive. Here, we report that increasing curvature redistributes wave energy density towards the cochlea's outer wall, affecting the shape of waves propagating on the membrane, particularly in the region where low frequency sounds are processed.
doi_str_mv	10.1103/PhysRevLett.96.088701
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subjects	Animals Basilar Membrane - anatomy & histology Basilar Membrane - physiology Cochlea - anatomy & histology Cochlea - physiology Humans Labyrinthine Fluids - physiology Models, Biological
title	Cochlea's graded curvature effect on low frequency waves
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