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Kinematic Investigation of Lingual Movement in Words of Increasing Length in Acquired Apraxia of Speech

Authors :
Bartle-Meyer, Carly J.
Goozee, Justine V.
Murdoch, Bruce E.
Source :
Clinical Linguistics & Phonetics. Feb 2009 23(2):93-121.
Publication Year :
2009

Abstract

The current study aimed to use electromagnetic articulography (EMA) to investigate the effect of increasing word length on lingual kinematics in acquired apraxia of speech (AOS). Tongue-tip and tongue-back movement was recorded for five speakers with AOS and a concomitant aphasia (mean age = 53.6 years; SD = 12.60) during target consonant production (i.e. /t, s, k/ singletons; /kl, sk/ clusters), for one and two syllable stimuli. The results obtained for each of the participants with AOS were individually compared to those obtained by a control group (n = 12; mean age = 52.08 years; SD = 12.52). Results indicated that the participants with AOS exhibited longer movement durations and, in some instances, larger tongue movements during consonant singletons and consonant cluster constituents embedded within mono- and multisyllabic utterances. Despite this, two participants with AOS exhibited a word length effect that was comparable with the control speakers, and possibly indicative of an intact phonological system. (Contains 10 tables and 1 figure.)

Details

Language :
English
ISSN :
0269-9206
Volume :
23
Issue :
2
Database :
ERIC
Journal :
Clinical Linguistics & Phonetics
Publication Type :
Academic Journal
Accession number :
EJ827212
Document Type :
Journal Articles<br />Reports - Research
Full Text :
https://doi.org/10.1080/02699200802564284