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

    Krishnan, Saloni and Bergström, Lina and Alcock, K.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 12–30 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.

    Metadata

    Item Type: Article
    Keyword(s) / Subject(s): Orofacial movements, Sequencing, Motor ability, Speech motor control, Williams syndrome
    School: Birkbeck Schools and Departments > School of Science > Psychological Sciences
    Research Centre: Brain and Cognitive Development, Centre for (CBCD)
    Depositing User: Administrator
    Date Deposited: 28 Nov 2014 10:17
    Last Modified: 02 Dec 2016 11:18
    URI: http://eprints.bbk.ac.uk/id/eprint/11133

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