A new feature extraction / classification method for High Density surface ElectroMyoGraphy (HD sEMG) Motor Unit Action Potential (MUAP) decomposition using 2D shape and energy distribution features is presented and experimentally tested.

Cold ambient temperature conditions are known to affect muscle performance characteristics, such as force output, power, and contraction velocity [ 11. Spectral and aniplitude characteristics of electromyogram (EMG) during inuscle contraction are modulated by the cold and hot ambient temperature [2]. Voluntary control of single motor unit action potentials (MUM') is a widely used method for inv...

In order to increase insight into the electrical phenomena of active motor units, a computer simulation model has been developed. With this model motor unit action potentials (MUAPs) have been calculated. The model has been based on the superposition of the muscle fibre potentials of the fibres of one motor unit. For verification, calculated MUAPs have been compared with the matching recorded M...

Objective: We investigated the architectural organization of groups of neighboring motor units (MUs) in normal brachial biceps and tibialis anterior muscles by analyzing morphological landmarks of their MU action potentials (MUAPs). Methods: EMG signals containing multiple MUAPs were recorded using a monopolar needle electrode during moderate isometric voluntary contractions. The MUAPs were ide...

21 Oscillatory activity plays a crucial role in corticospinal control of muscle synergies 22 and is widely investigated using corticospinal and intermuscular synchronization. 23 However, the neurophysiological mechanisms that translate these rhythmic patterns 24 into surface electromyography (EMG) are not well understood. This is underscored 25 by the ongoing debate on the rectification of surf...

Amplitude estimates of simulated surface electromyograms (EMGs) were studied using both unwhitened and whitened EMG amplitude estimators. Constant-effort non-fatiguing EMGs were simulated as the superposition of simple synthetic motor unit action potential trains (MUAPTs). Each MUAPT was formed from random firings of randomly shaped motor unit action potentials. Two aspects of unwhitened vs. wh...

Oscillatory activity plays a crucial role in corticospinal control of muscle synergies and is widely investigated using corticospinal and intermuscular synchronization. However, the neurophysiological mechanisms that translate these rhythmic patterns into surface electromyography (EMG) are not well understood. This is underscored by the ongoing debate on the rectification of surface EMG before ...

Electromyography (EMG) is a technique that gives information about the neuromuscular pattern and function which commonly-used in practice of neurology. With this method, signals obtained from muscle cells using an amplificatore are enhanced to amount enough study on. The potentials monitored called Motor Unit Action Potentials (MUAPs). In study, findings gathered by simulation dipole model for ...