Attention in action: evidence from on-line corrections in left visual neglect

Stephanie Rossit, Robert D. McIntosh, Paresh Malhotra, Stephen H. Butler, Keith Muir, Monika Harvey

    Research output: Contribution to journalArticle

    Abstract

    It is widely accepted that the posterior parietal cortex is critical for the on-line control of action and optic ataxia patients are unable to correct their movements in-flight to changes in target position. The current study investigated on-line correction in patients with left visual neglect, right brain damaged patients without neglect and healthy controls. Participants were asked to reach towards a central target that could jump unexpectedly, at movement onset, to the right or left sides of space. In response to the jump, participants were asked either to follow the target or to stop their movement. Neglect patients were able to correct their ongoing movements smoothly and accurately towards right and left target jumps. They did so even when told to stop their movement, indicating that these corrections occurred automatically (i.e., without instruction). However, the timing of corrections to the left was delayed in neglect patients and this produced a drastic increase in movement time.
    Original languageEnglish
    Pages (from-to)1124-1135
    Number of pages12
    JournalNeuropsychologia
    Volume50
    Issue number6
    DOIs
    Publication statusPublished - May 2012

    Keywords

    • movement
    • vision sciences
    • neuroscience
    • brain damage

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    Rossit, S., McIntosh, R. D., Malhotra, P., Butler, S. H., Muir, K., & Harvey, M. (2012). Attention in action: evidence from on-line corrections in left visual neglect. Neuropsychologia, 50(6), 1124-1135. https://doi.org/10.1016/j.neuropsychologia.2011.10.004