ORCID Profile
0000-0002-8106-7666
Current Organisations
University of Western Australia
,
Curtin University of Technology
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Publisher: Wiley
Date: 22-12-2010
Publisher: Springer Berlin Heidelberg
Date: 2012
Publisher: IEEE
Date: 07-2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2010
Publisher: Elsevier BV
Date: 2008
Publisher: IEEE
Date: 07-2008
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-1995
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2003
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2005
Abstract: The electromyographic (EMG) signal provides information about the performance of muscles and nerves. At any instant, the shape of the muscle signal, motor unit action potential (MUAP), is constant unless there is movement of the position of the electrode or biochemical changes in the muscle due to changes in contraction level. The rate of neuron pulses, whose exact times of occurrence are random in nature, is related to the time duration and force of a muscle contraction. The EMG signal can be modeled as the output signal of a filtered impulse process where the neuron firing pulses are assumed to be the input of a system whose transfer function is the motor unit action potential. Representing the neuron pulses as a point process with random times of occurrence, the higher order statistics based system reconstruction algorithm can be applied to the EMG signal to characterize the motor unit action potential. In this paper, we report results from applying a cepstrum of bispectrum based system reconstruction algorithm to real wired-EMG (wEMG) and surface-EMG (sEMG) signals to estimate the appearance of MUAPs in the Rectus Femoris and Vastus Lateralis muscles while the muscles are at rest and in six other contraction positions. It is observed that the appearance of MUAPs estimated from any EMG (wEMG or sEMG) signal clearly shows evidence of motor unit recruitment and crosstalk, if any, due to activity in neighboring muscles. It is also found that the shape of MUAPs remains the same on loading.
Publisher: No publisher found
Date: 1996
DOI: 10.1109/26.486619
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2007
Publisher: IEEE
Date: 06-2008
Publisher: IEEE
Date: 07-2008
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 1996
DOI: 10.1109/12.544488
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 1999
DOI: 10.1109/26.752138
Publisher: ACM
Date: 07-07-2007
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 1998
DOI: 10.1109/26.655406
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2007
No related grants have been discovered for Jacqueline Walker.