Theoretical modeling and experimental high-speed imaging of elongated vocal folds. IEEE Trans Biomed Eng 2011 Oct;58(10):2725-31
Date
12/02/2010Pubmed ID
21118763Pubmed Central ID
PMC4131451DOI
10.1109/TBME.2010.2095012Scopus ID
2-s2.0-80053187220 (requires institutional sign-in at Scopus site) 6 CitationsAbstract
In this paper, the role of vocal fold elongation in governing glottal movement dynamics was theoretically and experimentally investigated. A theoretical model was first proposed to incorporate vocal fold elongation into the two-mass model. This model predicted the direct and nondirect components of the glottal time series as a function of vocal fold elongation. Furthermore, high-speed digital imaging was applied in excised larynx experiments to visualize vocal fold vibrations with variable vocal fold elongation from -10% to 50% and subglottal pressures of 18- and 24-cm H(2)O. Comparison between theoretical model simulations and experimental observations showed good agreement. A relative maximum was seen in the nondirect component of glottal area, suggesting that an optimal elongation could maximize the vocal fold vibratory power. However, sufficiently large vocal fold elongations caused the nondirect component to approach zero and the direct component to approach a constant. These results showed that vocal fold elongation plays an important role in governing the dynamics of glottal area movement and validated the applicability of the proposed theoretical model and high-speed imaging to investigate laryngeal activity.
Author List
Zhang Y, Regner MF, Jiang JJAuthor
Michael Regner MD Associate Professor in the Radiology department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Computer SimulationHumans
Models, Biological
Photography
Signal Processing, Computer-Assisted
Vibration
Vocal Cords
