ERIC Number: EJ962283
Record Type: Journal
Publication Date: 2011-Jan
Pages: 14
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0269-9206
EISSN: N/A
Kinematic Analysis of Lingual Movements during Consonant Productions in Dysarthric Speakers with Friedreich's Ataxia: A Case-by-Case Analysis
Folker, Joanne E.; Murdoch, Bruce E.; Cahill, Louise M.; Delatycki, Martin B.; Corben, Louise A.; Vogel, Adam P.
Clinical Linguistics & Phonetics, v25 n1 p66-79 Jan 2011
Articulatory kinematics were investigated using electromagnetic articulography (EMA) in four dysarthric speakers with Friedreich's ataxia (FRDA). Specifically, tongue-tip and tongue-back movements were recorded by the AG-200 EMA system during production of the consonants t and k as produced within a sentence utterance and during a rapid syllable repetition task. The results obtained for each of the participants with FRDA were individually compared to those obtained by a control group (n = 10). Results revealed significantly greater movement durations and increased articulatory distances, most predominantly during the approach phase of consonant production. A task difference was observed with lingual kinematics more disturbed during the syllable repetition task than during the sentence utterance. Despite expectations of slowed articulatory movements in FRDA dysarthria, the EMA data indicated that the observed prolongation of consonant phase durations was generally associated with greater articulatory distances, rather than slowed movement execution. (Contains 3 tables and 1 figure.)
Descriptors: Adults, Articulation Impairments, Neurological Impairments, Suprasegmentals, Phonemes, Control Groups, Sentences, Syllables, Repetition, Motion, English
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Publication Type: Journal Articles; Reports - Research
Education Level: Adult Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A