Effects of dopamine on postural control in parkinsonian subjects: scaling, set, and tone.

@article{Horak1996EffectsOD,
  title={Effects of dopamine on postural control in parkinsonian subjects: scaling, set, and tone.},
  author={F B Horak and Joseph J. Frank and John Nutt},
  journal={Journal of neurophysiology},
  year={1996},
  volume={75 6},
  pages={2380-96}
}
1. This study investigates the effects of parkinsonism and of dopamine replacement therapy (levodopa) on scaling the magnitude of automatic postural responses based on sensory feedback and on predictive central set. Surface reactive torques and electromyographic (EMG) activity in response to backward surface translations were compared in patients with parkinsonism ON and OFF levodopa and in elderly control subjects. Correlations between the earliest postural responses [initial rate of change of… CONTINUE READING
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