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Chaos : Asymmetric spatiotemporal chaos induced by a polypoid mass in the excised larynx

By Yu Zhang and Jack J. Jiang

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Book Id: WPLBN0002169284
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 7 October 2008

Title: Chaos : Asymmetric spatiotemporal chaos induced by a polypoid mass in the excised larynx  
Author: Yu Zhang and Jack J. Jiang
Volume: Issue : October 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Chaos Collection
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Publication Date:
Publisher: American Institute of Physics

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And Jack J. Jian, Y. Z. (n.d.). Chaos : Asymmetric spatiotemporal chaos induced by a polypoid mass in the excised larynx. Retrieved from http://www.gejl.org/


Description
Description: In this paper, asymmetric spatiotemporal chaos induced by a polypoid mass simulating the laryngeal pathology of a vocal polyp is experimentally observed using high-speed imaging in an excised larynx. Spatiotemporal analysis reveals that the normal vocal folds show spatiotemporal correlation and symmetry. Normal vocal fold vibrations are dominated mainly by the first vibratory eigenmode. However, pathological vocal folds with a polypoid mass show broken symmetry and spatiotemporal irregularity. The spatial correlation is decreased. The pathological vocal folds spread vibratory energy across a large number of eigenmodes and induce asymmetric spatiotemporal chaos. High-order eigenmodes show complicated dynamics. Spatiotemporal analysis provides a valuable biomedical application for investigating the spatiotemporal chaotic dynamics of pathological vocal fold systems with a polypoid mass and may represent a valuable clinical tool for the detection of laryngeal mass lesion using high-speed imaging.

 
 



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