Modelling contralesional movement slowing after unilateral brain damage

Casimir J.H. Ludwig, Stephen H Butler, Stephanie Rossit, Monika Harvey, Iain D. Gilchrist

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Effective interaction with the world requires the brain to signal behaviourally relevant events and organise an appropriate and timely motor response to such events. Unilateral brain lesion typically results in a reduction and slowing of motor behaviour directed to contralesional space. Accumulator models of choice and reaction time can distinguish between two possible functional causes of this deficit: slowed extraction of evidence in favour of a motor response or an increase in the required amount of evidence for response generation. Three patients with unilateral damage to the right hemisphere were tested on a visually guided saccade task.
    Original languageEnglish
    Pages (from-to)1-4
    Number of pages4
    JournalNeuroscience Letters
    Volume452
    Issue number1
    DOIs
    Publication statusPublished - Mar 2009

    Keywords

    • brain lesion
    • neuropsychology
    • computational modelling
    • motor response

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