Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

PERSISTENT DEVELOPMENTAL STUTTERING AS A CORTICAL-SUBCORTICAL DYSFUNCTION Evidence from muscle activation

Full text
Author(s):
Furquim de Andrade, Claudia Regina [1] ; Sassi, Fernanda Chiarion [1] ; Juste, Fabiola [1] ; Zanotto de Mendonca, Lucia Iracema [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Sch Med, Dept Physiotherapy Speech Language & Hearing Sci, Sao Paulo - Brazil
[2] FMUSP, Hosp Clin, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Arquivos de Neuro-Psiquiatria; v. 66, n. 3B, p. 659-664, SEP 2008.
Web of Science Citations: 4
Abstract

Background: One contemporary view of stuttering posits that speech disfluencies arise from anomalous speech motor control. Purpose: To verify the rest muscle tension and speech reaction time of fluent and stuttering adults. Method: 22 adults, divided in two groups: G1 - 11 fluent individuals; G2 - 11 stutterers. Electromyography recordings (inferior orbicularis oris) were collected in two different situations: during rest and in a reaction time activity. Results: The groups were significantly different considering rest muscle tension (G2 higher recordings) and did not differ when considering speech reaction time and muscle activity during speech. There was a strong positive correlation between speech reaction time and speech muscle activity for G2 - the longer the speech reaction time, the higher the muscle activity during speech. Conclusion: In addition to perceptible episodes of speech disfluency, stutterers exhibit anomalies in speech motor output during fluent speech. Correlations with a possible cortical-subcortical disorder are discussed. (AU)