Kinematic analysis of articulatory coupling in acquired apraxia of speech post-stroke

Bartle-Meyer, Carly J., Goozée, Justine V., Murdoch, Bruce E. and Green, Jordan R. (2009) Kinematic analysis of articulatory coupling in acquired apraxia of speech post-stroke. Brain Injury, 23 2: 133-145. doi:10.1080/02699050802649654

Author Bartle-Meyer, Carly J.
Goozée, Justine V.
Murdoch, Bruce E.
Green, Jordan R.
Title Kinematic analysis of articulatory coupling in acquired apraxia of speech post-stroke
Journal name Brain Injury   Check publisher's open access policy
ISSN 0269-9052
Publication date 2009
Sub-type Article (original research)
DOI 10.1080/02699050802649654
Volume 23
Issue 2
Start page 133
End page 145
Total pages 13
Editor J. S. Kreutzer
N. D. Zasler
Place of publication United Kingdom
Publisher Informa Healthcare
Language eng
Subject 920107 Hearing, Vision, Speech and Their Disorders
1103 Clinical Sciences
Formatted abstract
Primary objective:
Electromagnetic articulography was employed to investigate the strength of articulatory coupling and hence the degree of functional movement independence between individual articulators in apraxia of speech (AOS).

Methods and procedures:
Tongue-tip, tongue-back and jaw movement was recorded from five speakers with AOS and a concomitant aphasia (M = 53.6 years; SD = 12.60) during /ta, sa, la, ka/ syllable repetitions, spoken at typical and fast rates of speech. Covariance values were calculated for each articulatory pair to gauge the strength of articulatory coupling. The results obtained for each of the participants with AOS were individually compared to those obtained by a control group (n = 12; M = 52.08 years; SD = 12.52). Comparisons were made between the typical rate productions of the control group and the typical and fast rate productions of the participants with AOS.

Main outcomes and results:
In comparison to the control group, four speakers with AOS exhibited significantly stronger articulatory coupling for alveolar and/or velar speech targets, during typical and/or fast rate conditions, suggesting decreased functional movement independence.

The reduction in functional movement independence might have reflected an attempt to simplify articulatory control or a decrease in the ability to differentially control distinct articulatory regions.
Keyword Apraxia of speech
Electromagnetic articulography
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Health and Rehabilitation Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 08 Sep 2009, 14:13:08 EST by Meredith Downes on behalf of School of Health & Rehabilitation Sciences