Firing rate analysis using decomposition-enhanced spike triggered averaging in the quadriceps femoris
✍ Scribed by Robin A. Conwit; Brian Tracy; Alison Cowl; Megan McHugh; Dan Stashuk; William F. Brown; E. Jeffrey Metter
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 67 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0148-639X
No coin nor oath required. For personal study only.
✦ Synopsis
Electromyographic signals detected from the quadriceps femoris during various constant force contractions were decomposed to identify individual motor unit discharges and mean firing rates (FRs). Subject and group mean FRs were calculated for each force level. Mean FR values and FR variability increased with force. Individual, subject, and group mean FRs showed slight increases until 30% of maximum voluntary contraction and larger increases thereafter. Findings are discussed in relation to motor unit recruitment, frequency modulation, and fatigue.