EMG responses to free fall in elderly subjects and akinetic rigid patients.

  title={EMG responses to free fall in elderly subjects and akinetic rigid patients.},
  author={Alexandre R Bisdorff and Adolfo Miguel Bronstein and Clive J. Wolsley and Michael Andrew Gresty and Amy Goodwin Davies and Archie Young},
  journal={Journal of neurology, neurosurgery, and psychiatry},
  volume={66 4},
OBJECTIVES The EMG startle response to free fall was studied in young and old normal subjects, patients with absent vestibular function, and patients with akinetic-rigid syndromes. The aim was to detect any derangement in this early phase of the "landing response" in patient groups with a tendency to fall. In normal subjects the characteristics of a voluntary muscle contraction (tibialis anterior) was also compared when evoked by a non-startling sound and by the free fall startle. METHODS… CONTINUE READING


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