Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy

The current study explored the possibility that the consonantal landmarks served as predictors of dysarthric speech produced by English-speaking adults with cerebral palsy (CP). Additionally, the relationship between the perceptual severity of dysarthric speech and the consonantal landmarks was expl...

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Main Authors: Chin-Ting Liu, Yuan-shan Chen
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Brain Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3425/11/12/1550
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author Chin-Ting Liu
Yuan-shan Chen
author_facet Chin-Ting Liu
Yuan-shan Chen
author_sort Chin-Ting Liu
collection DOAJ
description The current study explored the possibility that the consonantal landmarks served as predictors of dysarthric speech produced by English-speaking adults with cerebral palsy (CP). Additionally, the relationship between the perceptual severity of dysarthric speech and the consonantal landmarks was explored. The analyses included 210 sentences from the TORGO database produced by seven English-speaking CP speakers with dysarthria and seven typically developing controls matched in age and gender. The results indicated that the clinical group produced more total landmark features than did the control group. A binominal regression analysis revealed that the improper control of laryngeal vibration and the inability to tactically control the energy in a voiced segment would lead to the higher likelihood of dysarthric speech. A multinominal regression analysis revealed that producing too many <i>+v</i> and <i>−v</i> landmark features would lead to higher perceptual severity levels among the CP speakers. Together with literature, the current study proposed that the landmark-based acoustic analysis could quantify the differences in consonantal productions between dysarthric and non-dysarthric speech and reflect the underlying speech motor deficits of the population in concern.
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spelling doaj.art-ee932513b5fe4e9794ae847048e430e62023-12-03T13:28:48ZengMDPI AGBrain Sciences2076-34252021-11-011112155010.3390/brainsci11121550Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral PalsyChin-Ting Liu0Yuan-shan Chen1Department of Applied English, National Chin-Yi University of Technology, Taichung 411030, TaiwanDepartment of Applied English, National Chin-Yi University of Technology, Taichung 411030, TaiwanThe current study explored the possibility that the consonantal landmarks served as predictors of dysarthric speech produced by English-speaking adults with cerebral palsy (CP). Additionally, the relationship between the perceptual severity of dysarthric speech and the consonantal landmarks was explored. The analyses included 210 sentences from the TORGO database produced by seven English-speaking CP speakers with dysarthria and seven typically developing controls matched in age and gender. The results indicated that the clinical group produced more total landmark features than did the control group. A binominal regression analysis revealed that the improper control of laryngeal vibration and the inability to tactically control the energy in a voiced segment would lead to the higher likelihood of dysarthric speech. A multinominal regression analysis revealed that producing too many <i>+v</i> and <i>−v</i> landmark features would lead to higher perceptual severity levels among the CP speakers. Together with literature, the current study proposed that the landmark-based acoustic analysis could quantify the differences in consonantal productions between dysarthric and non-dysarthric speech and reflect the underlying speech motor deficits of the population in concern.https://www.mdpi.com/2076-3425/11/12/1550cerebral palsydysarthrialandmark-based theoryconsonants
spellingShingle Chin-Ting Liu
Yuan-shan Chen
Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy
Brain Sciences
cerebral palsy
dysarthria
landmark-based theory
consonants
title Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy
title_full Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy
title_fullStr Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy
title_full_unstemmed Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy
title_short Consonantal Landmarks as Predictors of Dysarthria among English-Speaking Adults with Cerebral Palsy
title_sort consonantal landmarks as predictors of dysarthria among english speaking adults with cerebral palsy
topic cerebral palsy
dysarthria
landmark-based theory
consonants
url https://www.mdpi.com/2076-3425/11/12/1550
work_keys_str_mv AT chintingliu consonantallandmarksaspredictorsofdysarthriaamongenglishspeakingadultswithcerebralpalsy
AT yuanshanchen consonantallandmarksaspredictorsofdysarthriaamongenglishspeakingadultswithcerebralpalsy