Title :
Testing of motor unit synchronization model for localized muscle fatigue
Author :
Naik, Ganesh R. ; Kumar, Dinesh K. ; Yadav, Vivek ; Wheeler, Katherine ; Arjunan, Sridhar
Author_Institution :
Fac. of Electr. & Comput. Eng., RMIT Univ. Melbourne, Melbourne, VIC, Australia
Abstract :
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.
Keywords :
biomedical measurement; electromyography; independent component analysis; medical signal detection; synchronisation; independent component analysis; localised muscle fatigue onset; motor unit pseudorandom excitation; motor unit synchronisation model; muscle contraction; recruitment pattern change; sEMG spectral compression; surface electromyogram; Action Potentials; Computer Simulation; Electromyography; Humans; Models, Neurological; Motor Neurons; Muscle Contraction; Muscle Fatigue; Muscle, Skeletal; Recruitment, Neurophysiological;
Conference_Titel :
Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE
Conference_Location :
Minneapolis, MN
Print_ISBN :
978-1-4244-3296-7
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2009.5332486