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Cognitive-motor dysfunction in Parkinson's disease

R G Brown1, M Jahanshahi

  • 1Medical Research Council, National Hospital for Neurology and Neurosurgery, London, UK.

European Neurology
|January 1, 1996
PubMed
Summary

Parkinson's disease (PD) impairs goal-directed behavior, affecting both cognitive and motor functions. Akinesia in PD reflects a breakdown in action control, with symptoms adapting to disease limitations.

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Area of Science:

  • Neuroscience
  • Movement Disorders
  • Cognitive Science

Background:

  • Parkinson's disease (PD) is characterized by diverse cognitive and motor deficits.
  • Current frameworks often isolate these dysfunctions within specific neuroanatomical regions.

Purpose of the Study:

  • To propose an integrated framework for understanding Parkinson's disease deficits.
  • To re-examine motor symptoms, specifically akinesia, through the lens of action control.

Main Methods:

  • Conceptual analysis integrating cognitive, motor, and integrative levels of action control.
  • Focus on akinesia as a key manifestation of impaired goal-directed behavior in PD.

Main Results:

  • Akinesia in PD (slowness to initiate/execute movement, poverty of movement) represents a breakdown in distributed action control.
  • These motor symptoms are viewed as adaptive responses to the disease's limitations.

Conclusions:

  • A unified framework based on 'action' (goal-directed behavior) can integrate diverse Parkinson's disease symptoms.
  • Understanding akinesia as a system-level deficit offers new perspectives on PD pathophysiology.

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