Williams syndrome:a surprising deficit in oromotor praxis in a population with proficient language production

Krishnan, Saloni and Bergstroem, Lina and Alcock, Katherine J. and Dick, Frederic and Karmiloff-Smith, Annette (2015) Williams syndrome:a surprising deficit in oromotor praxis in a population with proficient language production. Neuropsychologia, 67. pp. 82-90. ISSN 0028-3932

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Abstract

Williams Syndrome (WS) is a neurodevelopmental disorder of known genetic origin, characterized by serious delays in language onset yet relatively verbose, intelligible and fluent speech in late childhood and adulthood. How do motor abilities relate to language in this group? We investigated planning and co-ordination of the movement of the speech articulators (oromotor praxis) in 28 fluent-speaking individuals with WS, aged between 12 and 30 years. Results indicate that, despite their fluent language, oromotor praxis was impaired in WS relative to two groups of typically-developing children, matched on either vocabulary or visuospatial ability. These findings suggest that the ability to plan, co-ordinate and execute complex sensorimotor movements contribute to an explanation of the delay in expressive language early in development in this neurodevelopmental disorder. In the discussion, we turn to more general issues of how individual variation in oromotor praxis may account for differences in speech/language production abilities across developmental language disorders. (c) 2014 The Authors. Published by Elsevier Ltd.

Item Type:
Journal Article
Journal or Publication Title:
Neuropsychologia
Additional Information:
Date of Acceptance: 25/11/2014 c 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3200/3205
Subjects:
ID Code:
73403
Deposited By:
Deposited On:
09 Apr 2015 08:47
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Oct 2020 04:47