Document Detail

Low-frequency coupling between eardrum and manubrium in a finite-element model.
MedLine Citation:
PMID:  8642115     Owner:  NLM     Status:  MEDLINE    
The mechanical coupling between the eardrum and the manubrium was studied by means of a finite-element model of the cat eardrum. Previous calculations of the effect of varying the eardrum curvature were extended, demonstrating the critical role of curvature in the behavior of the eardrum. A new procedure was developed for directly studying the coupling of forces from different points on the eardrum to the manubrium, and the distribution of load-coupling values over the eardrum surface was calculated. A geometrically simplified eardrum with a circular outline was also studied. It was found that certain regions of the eardrum are more effective in driving the manubrium than can be explained on the basis of their distance from the axis of rotation. This enhanced coupling depends on the curvature of the eardrum but, unlike the mechanism hypothesized by Helmholtz, requires neither tension nor anisotropy.
W R Funnell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  99     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  1996 May 
Date Detail:
Created Date:  1996-07-15     Completed Date:  1996-07-15     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:  3036-43     Citation Subset:  IM; S    
Department of BioMedical Engineering, McGill University, Montréal, QC, Canada.
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MeSH Terms
Manubrium / physiology*
Tympanic Membrane / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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