Accuracy of Acoustic Evaluation of Swallowing as a Diagnostic Method of Dysphagia in Individuals Affected by Stroke: Preliminary Analysis.

After a stroke, more than half of the patients have some kind of disability, and dysphagia is frequently found. Cervical auscultation by Doppler sonar is an innovative technique with gain of credibility in the clinical evaluation of swallowing. To verify the diagnostic accuracy of Doppler sonar along with the DeglutiSom® software as an auxiliary method in the evaluation of oropharyngeal dysphagia in patients after stroke.

Auditory perception of lay judges about gender identification of women with Reinke's edema.

Purpose: To investigate the auditory perception of lay judges of the voice gender identification of women with Reinke's edema and to associate it with its severity and fundamental frequency (F0).

Methods: This is an observational, analytical and cross-sectional study. A total of 46 lay judges analyzed 48 samples (counting numbers 1 to 10) of 24 women with Reinke's edema - the Reinke's Edema Group (REG) and 24 individuals, men and women, with other types of voice disorders - Control Group (CG).

Acoustic characteristics of the metallic voice quality.

Purpose: To characterize the fundamental frequency and the frequency of the formants F1, F2, F3, and F4 from vocal emissions of amateur singers with metallic voice quality.

Methods: There were 60 amateur female singers aged between 18 and 60 years old; 30 women with metallic voice quality forming the study group (SG) and 30 women without such a vocal quality forming control group (CG). The sample was selected through voice screening confirmed by reviewers after reaching a consensus.

A contribution to simulating a three-dimensional larynx model using the finite element method.

A three-dimensional model is presented to simulate the larynx during vocalization. The finite element method is used to calculate the airflow velocity and pressure along the larynx as well as tissue displacement. It is assumed that the larynx tissue is transversely isotropic and divided into three tissues: cover, ligament, and body.