Mean, median and mode estimation of motor unit action potential templates

  • Stashuk D
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Accurate cstimation of motor unit action potential (MUAP) templates in the presence of background EMG activity and instrumentation noise is an important requirement of quantitative clinical EMG analysis; especially if EMG signal decomposition is utilized. Traditional mean estimation was compared with recently utilized median estimation and a new mode estimation technique. Using the isolated MUAPs within 250 trains of concentric-needle-detected MUAPs (25- 740 per train), obtained using EMG signal decomposition, template baseline rms levels and their spike shape fidelities were measured. Median estimation had statistically better (~~0.05) average nns values than mode estimation, 3.1 +/- 2.6 vcrsus 3.5 +I- 2.4 pV, respectively. Both had significantly (p

Author-supplied keywords

  • Action
  • Estimation
  • Mode
  • Motor
  • Potential
  • Unit

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  • D.W. Stashuk

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