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    Numerical processing overcomes left neglect for the greyscales task

    Access Status
    Fulltext not available
    Authors
    Loftus, Andrea
    Nicholls, M.
    Mattingley, J.
    Bradshaw, J.
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Loftus, A. and Nicholls, M. and Mattingley, J. and Bradshaw, J. 2008. Numerical processing overcomes left neglect for the greyscales task. NeuroReport. 19 (8): pp. 835-838.
    Source Title
    NeuroReport
    DOI
    10.1097/WNR.0b013e3282ff0fa8
    ISSN
    09594965
    URI
    http://hdl.handle.net/20.500.11937/9355
    Collection
    • Curtin Research Publications
    Abstract

    This study examined whether numerical cues affect spatial attention in left neglect. Patients with right parietal damage (four with neglect, three without) completed a dual task. Stimuli consisted of two greyscales overlayed with high numbers (8, 9), low numbers (1, 2) or neutral stimuli (#, &). Participants identified if the overlay was high, low or neutral and then made a relative luminance judgement for the greyscales. Neglect patients demonstrated a rightward greyscales bias in the neutral overlay condition, which was overcome by processing low numbers. Control patients showed a leftward bias in the neutral condition, which was overcome by processing high numbers. The results demonstrate that the spatial architecture of numbers induces shifts of attention, which can overcome left neglect.

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