Tongue function in nondysarthric speakers with Parkinson's disease: An electromagnetic articulography investigation

Wong, Min Ney, Murdoch, Bruce E. and Whelan, Brooke-Mai (2010) Tongue function in nondysarthric speakers with Parkinson's disease: An electromagnetic articulography investigation. Journal of Medical Speech-Language Pathology, 18 3: 24-33.

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Author Wong, Min Ney
Murdoch, Bruce E.
Whelan, Brooke-Mai
Title Tongue function in nondysarthric speakers with Parkinson's disease: An electromagnetic articulography investigation
Journal name Journal of Medical Speech-Language Pathology  (ERA 2012 Listed)    (ERA 2010 Rank C)   Check publisher's open access policy
Publication date 2010-09-01
Sub-type Article
Volume number 18
Issue number 3
ISSN 1065-1438
Start page 24
End page 33
Total pages 10
Place of publication Florence, KY, United States
Publisher Delmar Cengage Learning
Collection year 2011
Language eng
Abstract Articulatory imprecision in Parkinson's disease (PD) has been attributed to reduced range of movement, rigidity, and abnormal speed of movement of the articulatory structures. Previous studies provided acoustic and kinematic evidence of lip muscle rigidity, reduced amplitude, and velocity of lip and jaw movement, mainly based on nonspeech measures. Very limited studies have documented the effects of PD on lingual kinematics during speech production. The present study aimed to investigate lingual kinematics during sentence production in a group of 7 nondysarthric speakers with PD using the electromagnetic articulograph (AG-200 EMA). Tongue-tip and tongue-back movements were recorded by the EMA system during sentence production. Seven non-neurologically impaired participants matched for age and sex served as a control group. Results revealed no significant difference on the distance of tongue movement. However, the PD group did show significantly reduced maximum velocity, maximum acceleration, maximum deceleration, and significantly longer duration of tongue movement. Rates of sentence production were also slower for the PD group. The subclinical differences in tongue kinematics of the nondysarthric speakers with PD documented in this study support that limitations in the range of tongue movement leading to articulatory undershoot may be a major contributor to articulatory impairment in dysarthric speakers with PD. Copyright © 2010 Delmar Cengage Learning.
Keyword Traumatic brain-injury
Kinematic analysis
Articulatory function
Dysarthric subjects
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article
Collections: Official 2011 Collection
School of Health and Rehabilitation Sciences Publications
 
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Created: Mon, 14 Mar 2011, 14:37:46 EST by Professor Bruce Murdoch on behalf of School of Health & Rehabilitation Sciences