Journal ArticleDOI
A Note on the Noninvasive Estimation of Muscle Fiber Conduction Velocity
TLDR
Average muscle action potential conduction velocity values were obtained during isometric constant-force contractions by a cross-correlation technique to minimize the bias introduced by nondelayed activity appearing on the two myoelectric derivations.Abstract:
Average muscle action potential conduction velocity values were obtained during isometric constant-force contractions by a cross-correlation technique. To minimize the bias introduced by nondelayed activity appearing on the two myoelectric derivations, the signals were doubly differentiated. This arrangement effectively reduced the nondelayed activity and increased the accuracy of the estimate.read more
Citations
More filters
Journal ArticleDOI
The Use of Surface Electromyography in Biomechanics
TL;DR: In this paper, the authors explored the various uses of surface electromyography in the field of biomechanics, including those involving the activation timing of muscles, the force/EMG signal relationship, and the use of the EMG signal as a fatigue index.
Journal ArticleDOI
Myoelectric manifestations of fatigue in voluntary and electrically elicited contractions
TL;DR: The main findings of this work are 1) myoelectric signal variables obtained from electrically elicited contractions show fluctuations smaller than those observed in voluntary contractions, 2) spectral variables are more sensitive to fatigue than conduction velocity and the average rectified value is more sensitiveto fatigue than the root-mean-square value.
Journal ArticleDOI
Comparison of algorithms for estimation of EMG variables during voluntary isometric contractions.
Dario Farina,Roberto Merletti +1 more
TL;DR: The purpose of this paper is to briefly review the most frequently used algorithms for EMG variable estimation, compare them using computer generated as well as real signals and outline the advantages and drawbacks of each.
Journal ArticleDOI
Surface myoelectric signal cross-talk among muscles of the leg ☆
TL;DR: It is concluded that a surface myoelectric signal detected on the skin above a leg muscle and having a peak-to-peak amplitude of up to 16.6% of a signal detected above a neighboring muscle may be due to cross-talk rather than to activation of the muscle below the electrode.
Journal ArticleDOI
Technology and instrumentation for detection and conditioning of the surface electromyographic signal: state of the art.
TL;DR: The aim of this review is to present the state of the art of the technology of detection and conditioning systems for surface electromyography (sEMG) in terms of electrode classification, impedance, noise, transfer function, and the spatial filtering effect of surface electrode configurations on the recorded sEMG signal.
References
More filters
Journal ArticleDOI
Conduction velocity and EMG power spectrum changes in fatigue of sustained maximal efforts
TL;DR: The relationship between the electromyographic (EMG) power spectrum and muscle conduction velocity was investigated during both fatiguing and nonfatiguing contractions of the adductor pollicis muscle, suggesting that during fatigue of maximal voluntary contractions, factors other than changes in the wave form of individual muscle fiber action potentials must contribute to the observed shift in the total surface EMG frequency components.
Journal ArticleDOI
Myoelectric signal conduction velocity and spectral parameters: influence of force and time
TL;DR: The study of a sustained contraction and on the recovery after such a contraction revealed that conduction velocity consistently decreased during a strong contraction as did various myoelectric spectral parameters, and it is concluded that factors other than the conduction Velocity along the muscle fibers affect the myoeLECTric signal during a high-level contraction.
Journal ArticleDOI
Conduction velocity in ischemic muscle: effect on EMG frequency spectrum.
TL;DR: It was concluded that maintenance of normal conduction velocity is dependent on the blood flow for removal of metabolic by-products and not for an energy supply.
Related Papers (5)
Interpretation of myoelectric power spectra: A model and its applications
L.H. Lindstrom,R.I. Magnusson +1 more