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ISSN: 2168-975X

Brain Disorders & Therapy
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Research Article

Auditory Processing of Speech and Non-Speech Stimuli in Children who Stutter: Electrophysiological Evidences

Isabela Crivellaro Gonçalves*, Claudia Regina Furquim de Andrade and Carla Gentile Matas
Faculty of Medicine, Department of Physiotherapy, Communication Science & Disorders, Occupational Therapy University of Sao Paulo, São Paulo, Brazil
Corresponding Author : Isabela Crivellaro Gonçalves
Faculty of Medicine
Department of Physiotherapy
Communication Science and Disorders
Occupational Therapy University of Sao Paulo
São Paulo-05360-000, Brazil
Tel: 551130919411
E-mail: [email protected]
Received: November 13, 2015; Accepted: December 16, 2015; Published: December 23, 2015
Citation: Gonçalves IC, De Andrade CRF, Matas CG (2015) Auditory Processing of Speech and Non-Speech Stimuli in Children who Stutter: Electrophysiological Evidences. Brain Disord Ther 4:199.doi:10.4172/2168-975X.1000199
Copyright: © 2015 Gonçalves IC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Objectives: Current scientific evidence supports the hypothesis that people who stutter have anomalous connections in auditory regions of the left hemisphere. Thus, it is reasonable to suppose that abnormal results in auditory evoked potentials may be related to this type of disorder. In the present study, Auditory Brainstem Responses (ABR) using stimuli of different complexities were recorded in order to investigate possible neural synchrony deficits in children who stutter (CWS).
Methods: Ten CWS aged between seven and 11 years and their non-stuttering peers (CWNS) underwent electrophysiological (speech- and click-evoked ABR) assessment.
Results: CWS showed greater variability in latency values, as well as a statistical trend towards significance regarding differences between right and left ears for the interpeak I-III in the click-evoked ABR. In the speech-evoked ABR, the latency values of wave C and the amplitude of VA complex were significantly higher in CWS.
Conclusions: The results suggest that CWS present differences in neural processes related to the processing of acoustic information, when compared to typically developing children, especially when more complex stimuli, such as speech, are considered.

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