Simulation of surface EMG for the analysis of muscle activity during whole body vibratory stimulation(834 views) Fratini A, Bifulco P, Romano M, Clemente F, Cesarelli M
Comput Meth Prog Bio (ISSN: 0169-2607), 2014 Jan; 113(1): 314-322.
Keywords: Emg, Motion Artifact, Motor Unit Synchronization, Whole Body Vibration, Particular Condition, Stimulation Frequencies, Vibration Frequency, Vibration Induced Motions, Muscle Activities, Surface Emg, Signal Reconstruction, Electrode, Electromyogram, Motor Unit Potential, Muscle Contraction, Nerve Ending, Oscillation, Rectus Femoris Muscle, Simulation, Computer Simulation, Electromyograph Electrode, Evoked Muscle Response, Frequency Analysis, Muscle Innervation, Periodicity, Action Potentials, Humans, Signal Processing, Computer-Assisted,
Affiliations: *** IBB - CNR ***
Department of Electrical Engineering and Information Technologies, University Federico II of Naples, Via Claudio, 21, 80125 Naples, Italy
Institute of Biomedical Engineering - CNR, Via Salaria Km 29, 300, 00016 Monterotondo S., Italy
References: Not available.
Simulation of surface EMG for the analysis of muscle activity during whole body vibratory stimulation
This study aims to reproduce the effect of motor-unit synchronization on surface EMG recordings during vibratory stimulation to highlight vibration evoked muscle activity. The authors intended to evaluate, through numerical simulations, the changes in surface EMG spectrum in muscles undergoing whole body vibration stimulation. In some specific bands, in fact, vibration induced motion artifacts are also typically present. In addition, authors meant to compare the simulated EMGs with respect to real recordings in order to discriminate the effect of synchronization of motor units discharges with vibration frequencies from motion artifacts. Computations were performed using a model derived from previous studies and modified to consider the effect of vibratory stimulus, the motor unit synchronization and the endplates-electrodes relative position on the EMG signal. Results revealed that, in particular conditions, synchronization of MUs' discharge generates visible peaks at stimulation frequency and its harmonics. However, only a part of the total power of surface EMGs might be enclosed within artifacts related bands (+/- 1 Hz centered at the stimulation frequency and its superior harmonics) even in case of strong synchronization of motor units discharges with the vibratory stimulus. (C) 2013 Elsevier Ireland Ltd. All rights reserved.
Simulation of surface EMG for the analysis of muscle activity during whole body vibratory stimulation
No results.
Simulation of surface EMG for the analysis of muscle activity during whole body vibratory stimulation