Intracochlear pressure and derived quantities from a three-dimensional model.

Intracochlear pressure and derived quantities from a three-dimensional model. Research Abstract Details 

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Intracochlear pressure and derived quantities from a three-dimensional model. Abstract Text:

Yong-Jin Yoon,Sunil Puria,Charles R Steele,

Intracochlear pressure is calculated from a physiologically based, three-dimensional gerbil cochlea model. Olson [J. Acoust. Soc. Am. 103, 3445-3463 (1998); 110, 349-367 (2001)] measured gerbil intracochlear pressure and provided approximations for the following derived quantities: (1) basilar membrane velocity, (2) pressure across the organ of Corti, and (3) partition impedance. The objective of this work is to compare the calculations and measurements for the pressure at points and the derived quantities. The model includes the three-dimensional viscous fluid and the pectinate zone of the elastic orthotropic basilar membrane with dimensional and material property variation along its length. The arrangement of outer hair cell forces within the organ of Corti cytoarchitecture is incorporated by adding the feed-forward approximation to the passive model as done previously. The intracochlear pressure consists of both the compressive fast wave and the slow traveling wave. A Wentzel-Kramers-Brillowin asymptotic and numerical method combined with Fourier series expansions is used to provide an efficient procedure that requires about 1 s to compute the response for a given frequency. Results show reasonably good agreement for the direct pressure and the derived quantities. This confirms the importance of the three-dimensional motion of the fluid for an accurate cochlear model.

Intracochlear pressure and derived quantities from a three-dimensional model. Publishing Authors By Initials

YJ Yoon,S Puria,CR Steele,

For similar natural sciences: chemistry: chemistry, physical: viscosity research abstracts see: natural sciences: chemistry: chemistry, physical: viscosity research

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Intracochlear pressure and derived quantities from a three-dimensional model. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: The Journal of the Acoustical Society of America

VOLUME: 122

Page Numbers: 952-66

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 1520-8524

DAY: 3

MONTH: Aug

YEAR: 2007

Intracochlear pressure and derived quantities from a three-dimensional model. Information

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LANGUAGE: eng

NlmUniqueID: 7503051

Intracochlear pressure and derived quantities from a three-dimensional model. Keywords Mesh Terms:

KEYWORDS: Viscosity

MESH TERMS: physiology

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Grant and Affiliation Information for Intracochlear pressure and derived quantities from a three-dimensional model.

AFFILIATION: Department of Mechanical Engineering, Stanford University, Stanford, California 94305-4035, USA. yongjiny@stanford.edu

Country: United States

AGENCY: United States NIDCD

GRANT: DC007910

ACRONYM: DC

MEDLINETA: J Acoust Soc Am

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