Rate coding is compressed but variability is unaltered for motor units in a hand muscle of old adults.

@article{Barry2007RateCI,
  title={Rate coding is compressed but variability is unaltered for motor units in a hand muscle of old adults.},
  author={Benjamin K. Barry and Michael A. Pascoe and Mark Jesunathadas and Roger M. Enoka},
  journal={Journal of neurophysiology},
  year={2007},
  volume={97 5},
  pages={3206-18}
}
The discharge of single motor units (n = 34) in the first dorsal interosseus muscle and the fluctuations in force during steady contractions were measured across a range of index finger abduction forces in old adults (77.1 +/- 6.9 yr, n = 20). These results were compared with previously reported data on 38 motor units from young adults (25.7 +/- 5.7 yr). Both minimal and peak discharge rates increased with recruitment threshold, but the strength of these relations was notably weaker for the old… CONTINUE READING

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