Viscoelastic properties of human aryepiglottic fold and ventricular fold tissues at phonatory frequencies

Neurofibroma of the aryepiglottic fold.

Less than 25 cases of neurofibromas of the larynx associated with von Recklinghausen disease have been reported in the literature [1-1 0]. Most patients present with dyspnea, dysphagia, stridor, or hoarseness. We report a case of an asymptomatic 41-year-old man who had an incidentally discovered aryepiglottic fold neurofibroma. To our knowledge this is the first such case demonstrated by MR ima...

Vocal fold vibration patterns and phonatory modes

Measurements of viscoelastic properties of the false vocal fold

Much has been learned about the viscoelastic properties of the true vocal fold, including its linear and nonlinear viscoelastic properties under both tensile and shear deformation. Very little is known about the viscoelastic behavior of the false vocal fold, however. Clinical observations and computational modeling studies of phonation have suggested that the false fold could contribute to the ...

Ventricular-fold dynamics in human phonation.

PURPOSE In this study, the authors aimed (a) to provide a classification of the ventricular-fold dynamics during voicing, (b) to study the aerodynamic impact of these motions on vocal-fold vibrations, and (c) to assess whether ventricular-fold oscillations could be sustained by aerodynamic coupling with the vocal folds. METHOD A 72-sample database of vocal gestures accompanying different acou...

Optical measurements of vocal fold tensile properties: implications for phonatory mechanics.

In voice research, in vitro tensile stretch experiments of vocal fold tissues are commonly employed to determine the tissue biomechanical properties. In the standard stretch-release protocol, tissue deformation is computed from displacements applied to sutures inserted through the thyroid and arytenoid cartilages, with the cartilages assumed to be rigid. Here, a non-contact optical method was e...