PMID: 8964777Apr 1, 1996Paper

Surface mechanomyogram reflects muscle fibres twitches summation

Journal of Biomechanics
C OrizioA Veicsteinas

Abstract

The aim of this work is to define the pattern of summation of the muscle fibre twitches in the surface mechanomyogram (MMG) generation process. For this purpose, two groups of muscle fibres of the extensor digitorum communis (EDC) were stimulated using needle electrodes. To these two artificial (because made by different muscle fibre types) motor units (MU1 and MU2), we administered: (a) separate stimulations: 3 and 9 Hz (MU1), 8 and 20 Hz (MU2) for 5 s; (b) simultaneous stimulation: 3 Hz (MU1) + 8 Hz (MU2); 9 Hz (MU1) + 20 Hz (MU2) for 5 s. The mechanomyograms, recorded during separate stimulation of MU1 and MU2, were linearly summated for the generation of a mechanomyographic signal to be compared with the one detected during (b) stimulation procedure. The bispectrum and the bicoherence of the generated MMG (MMGg) and of the MMG recorded during simultaneous (MMGs) stimulation were calculated for the detection of the quadratic non-linearity in the system responses. It was found that the MMGg and MMGs presented difference in the bispectrum and bicoherence index only when the 9-20 Hz stimulation pair was considered In conclusion, our data indicate that the MMG derives from the summation of the active muscle fibres twitches and t...Continue Reading

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Citations

Aug 1, 1997·Italian Journal of Neurological Sciences·C OrizioA Veicsteinas
May 22, 2001·Medical & Biological Engineering & Computing·M WatakabeY Itoh
Mar 4, 2005·Medical & Biological Engineering & Computing·T Zagar, D Krizaj
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Oct 14, 2004·European Journal of Applied Physiology·Pernille VedstedGisela Sjøgaard
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Mar 15, 2005·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Toshio MoritaniNarumi Nagai
May 22, 2001·Journal of Biomechanics·Y M Wong
Apr 18, 2000·Journal of Biomechanics·C OrizioA Veicsteinas
Aug 23, 2003·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Naokazu Miyamoto, Shingo Oda
Aug 23, 2003·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Tetsuya KimuraToshio Moritani
Aug 23, 2003·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·K SøgaardG Sjøgaard
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Dec 21, 2005·Biomedical Engineering Online·Travis W BeckMichelle Mielke
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Dec 1, 2009·Journal of Neuroscience Methods·C Russell HendrixRichard J Schmidt
Aug 30, 2008·Journal of Biomechanics·Dario FarinaPascal Madeleine

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