Journal of Research in Rehabilitation Sciences

A review of acoustic studies on the nature of speech errors in individuals with Broca’ aphasia

Document Type : Review Articles

Authors

1 Department of Speech Therapy, School of Rehabilitation, Isfahan University of Medical Sciences, Isfahan

2 Academic Member, Department of Speech Therapy, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan

10.22122/jrrs.v10i8.1710

Abstract

Introduction: Broca’s aphasia is one of the types of non-fluent aphasia that its main feature is imprecise speech sound productions. Different surveys have shown that patients with Broca’s aphasia have defects which can affect sound structure in their speech output, but it is less clear that the nature of these errors is an impairment in the selection and planning or articulatory implementation. Determination of the nature of speech errors in these patients is very important and necessary in order to recognize the basic mechanisms which are effective in creating these errors. The purpose of this descriptive study is to a review of studies which have investigated the nature of errors in acoustic ways in these patients.Materials and Method: This descriptive study has been conducted by searching for the following keywords: “acoustic parameters, nature of errors, Broca’s aphasia, speech motor control and Speech errors. The following databases have also been used to conduct searches: web of knowledge, science direct, Google scholar and PubMed.Results: Individuals with Broca’s aphasia possess defects including difficulties in timing, articulatory coordination, and laryngeal control in the field of speech motor control which are as a result of defects in the coordination, Timing of movements and articulatory implementation to produce the target segmentConclusion: Recent researches based on Acoustic parameters of the speech production patterns suggest that the main feature of speech impairment of people with Broca’s aphasic is a severe phonetic disorder relating to the articulator implementation of the selected and planned segments of speech.Keywords: Broca's aphasia, Speech motor control, Speech errors, acoustic parameters. 

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Journal of Research in Rehabilitation Sciences
Volume 10, Issue 8 - Serial Number 8
March 2015
Pages 991-1003
  • Receive Date: 04 February 2014
  • Revise Date: 20 April 2024
  • Accept Date: 22 May 2022