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1 results

  • Complex Motor Performance and Parkinson's Disease

  • Roselyne Normand, Robert Kerr, J. David Grimes
  • Journal:
    Canadian Journal on Aging / La Revue canadienne du vieillissement / Volume 12 / Issue 1 / Spring/printemps 1993
    Published online by Cambridge University Press:
    29 November 2010, pp. 89-101

  • The performance of seven Parkinson patients on a discrete pursuit tracking task was studied under alleviated (medicated) and unalleviated (non-medicated) conditions, and compared with the performance of seven non-Parkinson subjects matched for age and gender. All subjects completed 2,000 responses on the tracking task, which provided variations in directional probability and the distance to be moved. Overall, results suggested that once given sufficient practice to learn a novel task, and when under drug control, Parkinson patients were not significantly different from their age-matched controls. Two exceptions where Parkinson patients evidenced slower responses were noted: (a) their ability to make decisions when movement direction was less predictable: and (b) when they had to readjust their motor responses after an unexpected movement error.