Document Detail

Modeling the combined effects of basilar membrane nonlinearity and roughness on stimulus frequency otoacoustic emission fine structure.
MedLine Citation:
PMID:  11144584     Owner:  NLM     Status:  MEDLINE    
A theoretical framework for describing the effects of nonlinear reflection on otoacoustic emission fine structure is presented. The following models of cochlear reflection are analyzed: weak nonlinearity, distributed roughness, and a combination of weak nonlinearity and distributed roughness. In particular, these models are examined in the context of stimulus frequency otoacoustic emissions (SFOAEs). In agreement with previous studies, it is concluded that only linear cochlear reflection can explain the underlying properties of cochlear fine structures. However, it is shown that nonlinearity can unexpectedly, in some cases, significantly modify the level and phase behaviors of the otoacoustic emission fine structure, and actually enhance the pattern of fine structures observed. The implications of these results on the stimulus level dependence of SFOAE fine structure are also explored.
C L Talmadge; A Tubis; G R Long; C Tong
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  108     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2000 Dec 
Date Detail:
Created Date:  2000-12-28     Completed Date:  2001-02-22     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2911-32     Citation Subset:  IM    
National Center for Physical Acoustics, University of Mississippi, 38677, USA.
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MeSH Terms
Basilar Membrane / physiology*
Nonlinear Dynamics*
Otoacoustic Emissions, Spontaneous / physiology*
Pitch Discrimination / physiology*
Sound Spectrography*
Grant Support

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