Interference Effects from Observed Movement in Parkinson's Disease |
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| Authors: | Neil B. Albert Yasmin Peiris Georgia Cohen R. Chris Miall Peter Praamstra |
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| Affiliation: | 1. Behavioural Brain Sciences Centre , University of Birmingham , England;2. Department of Psychology , University of Chicago , Illinois;3. Behavioural Brain Sciences Centre , University of Birmingham , England;4. Department of Neurology , Queen Elizabeth Hospital, University of Birmingham , England |
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| Abstract: | Previous research has demonstrated that Parkinson's disease patients have an increased susceptibility to response conflict. In the present study, the authors investigate whether Parkinson's patients have a similar sensitivity to interference from observed movements. In all, 10 patients and 10 controls performed horizontal and vertical arm movements while watching a video of either a person performing similar movements or a moving dot. Movements were performed in the same plane (congruent) and orthogonal to the observed movement (incongruent). The off-axis variance of movements was our index of interference. Although patients tended to exhibit more off-axis variability than did controls, both groups demonstrated similar congruence effects, with greater variance in incongruent conditions. These results indicated that increased susceptibility to interference in Parkinson's disease does not extend to interference from observed movements. |
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| Keywords: | action observation interference mirror neuron system Parkinson's disease response selection |
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