Document Detail

Linear and nonlinear model of the human middle ear.
MedLine Citation:
PMID:  9745735     Owner:  NLM     Status:  MEDLINE    
The measurement of the middle ear transfer function usually requires invasive methods. An equivalent analog equivalent model enables us to evaluate its characteristics without damaging any part of the ear. A linear and a nonlinear model of the middle ear have been developed to predict intracochlear pressure and the stapes volume velocity for various sound pressure levels (SPL). The linear model results have been compared with human eardrum impedance and middle ear transfer function data. The nonlinear phenomena due to the contraction of the stapedius muscle over 80 dB and to the stapes clipping displacement above 120 dB are represented by a set of variable electrical components. The model of the acoustic reflex is based on experimental observations. The study of the annular ligament behavior was performed on cats and extrapolated to humans with some hypothetical restrictions. These approximations provide information on the middle ear transfer function and enable us to better understand the nonlinear middle ear mechanisms in an intense acoustic field.
J Pascal; A Bourgeade; M Lagier; C Legros
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  104     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  1998 Sep 
Date Detail:
Created Date:  1998-10-22     Completed Date:  1998-10-22     Revised Date:  2006-12-27    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1509-16     Citation Subset:  IM    
CEA-Centre d'Etudes Scientifiques et Techniques d'Aquitaine, Le Barp, France.
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MeSH Terms
Ear, Middle / physiology*
Models, Biological
Reflex, Acoustic / physiology

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