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    Differences in the use of vision and proprioception for postural control in autism spectrum disorder

    Access Status
    Fulltext not available
    Authors
    Morris, Susan
    Foster, C.
    Parsons, Richard
    Falkmer, Marita
    Falkmer, Torbjorn
    Rosalie, Simon
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Morris, S. and Foster, C. and Parsons, R. and Falkmer, M. and Falkmer, T. and Rosalie, S. 2015. Differences in the use of vision and proprioception for postural control in autism spectrum disorder. Neuroscience. 307: pp. 273-280.
    Source Title
    Neuroscience
    DOI
    10.1016/j.neuroscience.2015.08.040
    ISSN
    0306-4522
    School
    School of Physiotherapy and Exercise Science
    URI
    http://hdl.handle.net/20.500.11937/25287
    Collection
    • Curtin Research Publications
    Abstract

    Background: People with autism spectrum disorders (ASDs) also have poorer fundamental motor skills. The development of postural control underlies both social and motor skills. All three elements are facilitated by the active use of visual information. This study compares how adults with ASD and typically developed adults (TDAs) respond to a postural illusion induced using neck vibration. Adults with ASD unlike the TDA, were not expected to correct the illusion using vision. Methods: The study used intermittent (15off, 5on) posterior neck vibration during 200. s of quiet stance to induce a postural illusion. In TDAs and only in the absence of vision this protocol induces a forward body lean. Participants (12 ASD, 20 TDA) undertook four conditions combining vibration and visual occlusion. Results: As predicted, TDA were only affected by the postural illusion when vision was occluded (vibration condition: vision occluded (n= 1) p= 0.0001; vision available (n= 3) p> 0.2466). Adults with ASD were affected by the postural illusion regardless of the availability of vision (all conditions p<. 0.0007). Conclusions: Our findings indicated the adults with ASD did not use visual information to control standing posture. In light of existing evidence that vision-for-perception is processed typically in ASD, our findings support a specific deficit in vision-for-action. These findings may explain why individuals with ASD experience difficulties with both social and motor skills since both require vision-for-action. Further research needs to investigate the division of these visual learning pathways in order to provide more specific intervention opportunities in ASD.

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      © 2018 IBRO Individuals with autism spectrum disorder (ASD) have been associated with sensorimotor difficulties, commonly presented by poor postural control. Postural control is necessary for all motor behaviors. However, ...
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      © 2017 Springer-Verlag Berlin HeidelbergPerturbation-evoked responses (PERs) to a physical perturbation of postural stability have been detected using electroencephalography (EEG). Components of these responses are ...
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