Time-dependent structure in the discharge rate of human motor units.

  title={Time-dependent structure in the discharge rate of human motor units.},
  author={David E. Vaillancourt and L. -T. Larsson and Karl M. Newell},
  journal={Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology},
  volume={113 8},
OBJECTIVES The aim of this study was to examine the influence of visual and motor processes on the deterministic and stochastic structure of force output and motor unit discharge variability. METHODS Young adult subjects produced continuous, isometric force at 3, 6, 12, and 24% of their maximal voluntary contraction at low and high visual gain levels through abduction of the index finger. Force and fine-wire intramuscular electromyography were recorded. RESULTS There was a linear increase… CONTINUE READING