Non linear behavior of vocal fold vibration in an experimental model of asymmetric larynx: role of coupling between the two folds.
One of the main factors involved in the laryngeal dynamic's non-linearity is the coupling between the two vocal folds. Evaluation of the different coupling elements requires various investigations. The present work evaluate the non-linearity effects in clinical situations such as unilateral laryngeal paralysis using Lyapunov's coefficients. It also demonstrate the coupling effects on excised larynx made experimentally asymmetrical, using a specially designed device to measure vibrations from each vocal fold (opto-reflectometer).
Ouaknine
M
M
CHU La Timone, Laboratoires d'Audio-Phonologie Clinique, Marseille, France.
Giovanni
A
A
Guelfucci
B
B
Teston
B
B
Triglia
J M
JM
D000818:Animals; D007830:Larynx / Q000503:physiopathology*; D017711:Nonlinear Dynamics; D013552:Swine; D014732:Vibration; D014826:Vocal Cord Paralysis / Q000503:physiopathology*; D014827:Vocal Cords / Q000503:physiopathology*