The Bereitschaftspotential is abnormal in Parkinson's disease.

@article{Dick1989TheBI,
  title={The Bereitschaftspotential is abnormal in Parkinson's disease.},
  author={Judith P. Dick and John C. Rothwell and B. L. Day and Roberto M Cantello and O. J. S. Buruma and Maxime Gioux and Reiner Benecke and Alfredo Berardelli and Philip Douglas Thompson and C. David Marsden},
  journal={Brain : a journal of neurology},
  year={1989},
  volume={112 ( Pt 1)},
  pages={233-44}
}
The average Bereitschaftspotential (BP) preceding a rapid, self-paced voluntary extension movement of the index finger was recorded from 6 scalp locations in 14 patients with Parkinson's disease who had been withdrawn from their normal drug therapy for at least 12 h before testing. The amplitude of the potential was measured at the peak negativity (N1) and 650 ms prior to this (NS1), and compared with that recorded in a group of 12 age-matched control subjects. The N1 amplitude was the same as… CONTINUE READING
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