Electrical activity of extrinsic laryngeal muscles in subjects with and without dysphonia.

Objective: To compare dysphonic individuals to nondysphonic with regards to electrical activity of extrinsic laryngeal muscles related to perceptual and acoustic vocal parameters.

Hypothesis: Dysphonic individuals have higher electrical activity in the supra and infrahyoid muscles than those nondysphonic.

Study Design: Prospective, cross-sectional, case series study.

Analysis of the masticatory process of asthmatic children: Clinical and electromyographic research.

Introduction:  The prevalence of asthma has grown considerably in recent decades, but some studies have shown stabilization of this trend. The masticatory process of asthmatic children may be altered due to asthma-related anatomo-functional changes.

Objective:  The study objective was to determine the clinical and electromyographic characteristics of the masticatory process in asthmatic children and compare the electrical activities of their masseter and anterior temporal muscles (at rest and during maximal voluntary contraction and mastication) with those of non-asthmatic children.

Electrical activity of the masseter during swallowing after total laryngectomy.

Unlabelled: Total laryngectomy is a surgical procedure that can change swallowing biomechanics, including muscle activity of the masseter; this muscle stabilizes the mandible.

Aim: To characterize the electrical activity of the masseter muscle during swallowing after total laryngectomy. Series study.