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    Effects of task difficulty during dual-task circle tracing in Huntington's disease

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    Vaportzis_Journal_of_Neurology.pdf (330.5Kb)
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    Publication date
    2015-02
    Author
    Vaportzis, Ria
    Georgiou-Karistianis, N.
    Churchyard, A.
    Stout, J.C.
    Keyword
    Divided attention
    Proprioception
    Attention allocation
    Speed-accuracy trade-off
    Serial subtraction
    Visuomotor integration
    Rights
    © Springer-Verlag Berlin Heidelberg 2014. Reproduced in accordance with the publisher's self-archiving policy. The final publication is available at Springer via https://doi.org/10.1007/s00415-014-7563-9
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Huntington’s disease (HD) is associated with impairments in dual-task performance. Despite that, only a few studies have investigated dual-tasking in HD. We examined dual-task performance in 15 participants in the early stages of HD and 15 healthy controls. Participants performed direct circle tracing (able to view arm) and indirect circle tracing (arm obscured) either on their own (single tasks) or paired with serial subtraction by twos or threes (dual tasks). Overall, our results suggested that HD participants were significantly slower and less accurate than controls. Both groups were slower and less accurate when performing indirect circle tracing compared with direct circle tracing. HD participants experienced greater dual-task interference in terms of accuracy when performing direct circle tracing compared with indirect circle tracing. Despite that, controls were more inclined to speed–accuracy trade-offs compared with HD participants. Importantly, unlike controls, HD participants were not disproportionately faster when performing direct circle tracing as a single task compared with the dual-task conditions. Our results suggest that simple tasks place greater attentional demands on HD participants compared with controls. These findings support that impaired automaticity may be responsible for some of the attentional deficits manifested in HD.
    URI
    http://hdl.handle.net/10454/16812
    Version
    Accepted manuscript
    Citation
    Vaportzis E, Georgiou-Karistianis N, Churchyard A et al (2015) Effects of task difficulty during dual-task circle tracing in Huntington's disease. Journal of Neurology. 262(2): 268-276.
    Link to publisher’s version
    https://doi.org/10.1007/s00415-014-7563-9
    Type
    Article
    Collections
    Social Sciences Publications

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