Abstract
SummaryParkinson'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.Aimto asses laryngeal electromyography (LEMG) patterns and correlate them to vocal analysis in patients with Parkinson's disease.Materials and MethodsThis is a prospective study. Twenty six adults with PD underwent laryngeal electromyography. Rest and phonation potentials were analyzed. VOXMETRIA® and GRAM 5.1.6. ® were used in acoustic analysis.ResultsThe main electromyographic pattern observed in the PD group was rest hypertonicity meaning that patients with PD presented with spontaneous intrinsic laryngeal muscle activity during voice rest, which occurred in 73% of the individuals. Not a case of laryngeal tremor was detected by electromyography, although vocal tremor was detected by VOXMETRIA in 69.5% of the individuals and in 61% of them by perceptive-auditive analysis.ConclusionVocal tremor was the main acoustic change in the PD group, with no correlation to LEMG findings.
Highlights
Parkinson’s disease is caused by dopaminergic deficiencies in the basal nuclei that generate motor actions.According to Robbins, 70 to 92% of these patients progress with diseases of the tongue, larynx and pharynx
Oral communication is the main complaint in 30% of patients.[1]
laryngeal electromyography (LEMG) revealed hypercontractility during voice rest in 73% of subjects in the study group
Summary
According to Robbins, 70 to 92% of these patients progress with diseases of the tongue, larynx and pharynx. Parkinson’s dysarthria is characterized by abnormal voice modulation, hoarseness, voice tremor, decrease loudness and monotone voice. This diseases requires patients to constrict their vocal tract to a greater degree in order to issue certain phonemes.[1]. Electromyography is widely described in the literature as the diagnostic and monitoring method for systemic neuromuscular involvement in Parkinson patients. It was included as a diagnostic and therapeutic tool for laryngeal and voice disorders in the late 1980s.2,3
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