Assessment of local vocal fold deformation characteristics in an in vitro static tensile test
- 1 August 2011
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 130 (2), 977-985
- https://doi.org/10.1121/1.3605671
Abstract
Voice quality is strongly dependent on vocal folddynamics, which in turn are dependent on lung pressure and vocal foldbiomechanics. Numerical and physical models are often used to investigate the interactions of these different subsystems. However, the utility of numerical and physical models is limited unless appropriately validated with data from physiological models. Hence a method that enables analysis of local vocal fold deformations along the entire surface is presented. In static tensile tests, forces are applied to distinctive working points being located in cover and muscle, respectively, so that specific layer properties can be investigated. The forces are directed vertically upward and are applied along or above the vocal fold edge. The resulting deformations are analyzed using multiple perspectives and three-dimensional reconstruction. Deformation characteristics of four human vocal folds were investigated. Preliminary results showed two phases of deformation: a range with a small slope for small deformations fading into a significant nonlinear deformation trend with a high slope. An increase of tissue stiffness from posterior to anterior was detected. This trend is more significant for muscle and in the mid-anterior half of the vocal fold.Keywords
This publication has 18 references indexed in Scilit:
- Material parameter computation for multi-layered vocal fold modelsThe Journal of the Acoustical Society of America, 2011
- Measurements of Vocal Fold Elasticity Using the Linear Skin RheometerFolia Phoniatrica et Logopaedica, 2006
- A constitutive model of the human vocal fold cover for fundamental frequency regulationThe Journal of the Acoustical Society of America, 2006
- Medial surface dynamics of anin vivocanine vocal fold during phonationThe Journal of the Acoustical Society of America, 2005
- Computation of the three-dimensional medial surface dynamics of the vocal foldsJournal of Biomechanics, 2005
- Vocal fold vibration irregularities caused by different types of laryngeal asymmetryPublished by Springer Science and Business Media LLC ,2003
- Effect of Postmortem Changes and Freezing on the Viscoelastic Properties of Vocal Fold TissuesAnnals of Biomedical Engineering, 2003
- A comparative analysis of fundamental frequency estimation methods with application to pathological voicesMedical Engineering & Physics, 2000
- Stress-Strain Response of the Human Vocal LigamentAnnals of Otology, Rhinology & Laryngology, 1995
- Elastic models of vocal fold tissuesThe Journal of the Acoustical Society of America, 1991