Effect of Levodopa + Carbidopa on the Laryngeal Electromyographic Pattern in Parkinson Disease.

Background: Vocal impairment is one of the main debilitating symptoms of Parkinson disease (PD). The effect of levodopa on vocal function remains unclear.

Objective: This study aimed to determine the effect of levodopa on electromyographic patterns of the laryngeal muscle in patients with PD.

Laryngeal electromyography and acoustic voice analysis in Parkinson's disease: a comparative study.

Unlabelled: Parkinson's disease (PD) involves a progressive depletion of dopamine in the basal ganglia leading to motor alterations. Oral communication impairment occurs in 75% to 90% of patients and has been poorly studied.

Aim: to asses laryngeal electromyography (LEMG) patterns and correlate them to vocal analysis in patients with Parkinson's disease.

Laryngeal electromyography in adults with Parkinson's disease and voice complaints.

Objective: To study the laryngeal electromyography (LEMG) pattern in patients with Parkinson's disease (PD) and vocal complaints.

Study Design And Setting: Twenty-six adults with PD and vocal complaints and 26 controls with presbyphonia underwent videolaryngoscopy (VL) and LEMG.

Results: No tremor was found on LEMG of the cricothyroid and thyroarytenoid muscles, even in cases with clinical and VL tremor.