The Measurement of Muscle Fiber Conduction Velocity Using a Gradient Threshold Zero-Crossing Method
- 1 October 1982
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. BME-29 (10) , 673-678
- https://doi.org/10.1109/tbme.1982.324859
Abstract
The conduction velocity of myoelectric potential along muscle fiber is known to be an index of the degree of muscular fatigue or muscular disease. When detecting the myoelectric potential by means of surface electrodes, the conduction velocity must be extracted from an apparently random wave of a myoelectric signal. In this paper, a method for determining conduction velocity is proposed based upon a zero-crossing time delay measurement with reference to the derivative of a myoelectric signal. The slope value of the input signal provides an effective criterion for rejecting undesired zero crossing caused by noise. This method needs no spectral analysis nor correlation calculation. Compared to another previously reported zero-cossing approach using digital filter preprocessing, it shows a more accurate and rapid estimation of velocity.Keywords
This publication has 7 references indexed in Scilit:
- Frequency Parameters of the Myoelectric Signal as a Measure of Muscle Conduction VelocityIEEE Transactions on Biomedical Engineering, 1981
- A Note on the Time Constant in Low-Pass Filtering of Rectified Surface EMGIEEE Transactions on Biomedical Engineering, 1980
- Direct On-Line Estimation of Muscle Fiber Conduction Velocity by Surface ElectromyographyIEEE Transactions on Biomedical Engineering, 1979
- Physiology and Mathematics of Myoelectric SignalsIEEE Transactions on Biomedical Engineering, 1979
- Influence of electrode geometry on bipolar recordings of the surface electromyogramMedical & Biological Engineering & Computing, 1978
- Muscular Reaction to Welding Work: An Electromyographic InvestigationErgonomics, 1976
- Conduction velocity in ischemic muscle: effect on EMG frequency spectrumAmerican Journal of Physiology-Legacy Content, 1970