Phonatory characteristics of vocal fold tremor

Vocal fold vibration patterns and phonatory modes

Characteristics of phonatory function in singers and nonsingers with vocal fold nodules.

PURPOSE The goals of this study were to determine if there were significant differences between singers and nonsingers in the morphology of vocal nodules and the associated impact on vocal function. METHOD Participants were 10 professionally trained singers with nodules, eight nonsingers with nodules, and 10 individuals with healthy normal voice (controls). Surface electromyography (sEMG) fro...

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...

Estimation of Vocal Fold Characteristics using a Parametric Source Model

We describe a new method to estimate vocal cord dynamics using a parametric model of glottis movements in order to assess the health of the vocal cords and detect pathological conditions of the larynx. The underlying model is based on that proposed by the Fujisaki-Ljungqvist, modified by reducing the number of parameters. The choice of a parametric model enabled us to assess the impact of the v...

Three-dimensional characteristics of the larynx with immobile vocal fold.

OBJECTIVES To evaluate the 3-dimensional (3-D) characteristics of the laryngeal lumen in patients with unilateral vocal fold immobility (UVFI) during phonation with the aid of multislice helical computed tomography (MSHCT). DESIGN A retrospective study. SETTING University hospital. Subjects Thirty-seven patients with UVFI. INTERVENTIONS Each subject was asked to sustain the vowel /a/ and ...