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Kinematic analysis of consonant production in acquired apraxia of speech
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Abstract:
The aim of the present investigation was to use electromagnetic articulography (EMA) to examine lingual kinematics during consonant production in acquired apraxia of speech (AOS). Tongue-tip and tongue-back movement was recorded by the AG-200 EMA system for five speakers with AOS and a concomitant aphasia during a set of monosyllabic words. Comparisons were made between the results obtained for each of the participants with AOS and those obtained by a control group (n = 12). Results revealed disturbed lingual kinematics, characterized predominantly by significantly greater movement durations and increased articulatory distances. Generally, all speed measures (i.e., maximum acceleration/deceleration/velocity) obtained for the participants with AOS were comparable to those recorded by the control group. Phonetic complexity had a variable impact on consonant production. The results are able to account for slow speech production in AOS and might indicate that the apraxic speakers had difficulties with articulatory posturing.
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Keyword:
1103 Clinical Sciences; 920107 Hearing; Audiology & Speech-Language Pathology; C1; Clinical Neurology; Neurosciences & Neurology; Speech and Their Disorders; Vision
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URL: https://espace.library.uq.edu.au/view/UQ:183773
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