Testing of motor unit synchronization model for localized muscle fatigue.
Spectral compression of surface electromyogram (sEMG) is associated with onset of localized muscle fatigue. The spectral compression has been explained based on motor unit synchronization theory. According to this theory, motor units are pseudo randomly excited during muscle contraction, and with the onset of muscle fatigue the recruitment pattern changes such that motor unit firings become more synchronized. While this is widely accepted, there is little experimental proof of this phenomenon. This paper has used source dependence measures developed in research related to independent component analysis (ICA) to test this theory.
Naik
Ganesh R
GR
Faculty of Electrical and Computer Engineering, RMIT University Melbourne, Melbourne, Australia - 3001. ganesh.naik@rmit.edu.au
Kumar
Dinesh K
DK
Yadav
Vivek
V
Wheeler
Katherine
K
Arjunan
Sridhar
S
D000200:Action Potentials / Q000502:physiology*; D003198:Computer Simulation; D004576:Electromyography / Q000379:methods; D006801:Humans; D008959:Models, Neurological; D009046:Motor Neurons / Q000502:physiology*; D009119:Muscle Contraction / Q000502:physiology*; D018763:Muscle Fatigue / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D011999:Recruitment, Neurophysiological / Q000502:physiology*