Comparison of conventional and decomposition-enhanced spike triggered averaging techniques.
Comparison of conventional and decomposition-enhanced spike triggered averaging techniques.
复制标题
传统和分解增强尖峰触发平均技术的比较。
DOI：
10.1016/j.clinph.2003.11.006
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Stashuk,Daniel
中科院分区：
文献类型：
--
作者：
Lawson,VictoriaH;Bromberg,MarkB;Stashuk,Daniel
ObjectiveSpike triggered averaging (STA) is a technique to extract an estimate of a recurring motor unit potential from a complex electromyographic (EMG) signal. In conventional STA (C-STA), potentials related to the discharges of single intramuscular motor units are isolated and used to trigger an averager to obtain an individual surface-detected motor unit potential (S-MUP) from an EMG signal. In decomposition-enhanced STA (DE-STA), EMG signal decomposition algorithms determine discharges of a number of different motor units (4 to 10) that can be used to trigger an averager to obtain their corresponding S-MUPs. We tested the accuracy of extracting and averaging S-MUPs using DE-STA compared to C-STA for the same EMG signals.MethodsWe compared the intramuscular potentials used for triggering and the resultant averaged S-MUPs that were common in both techniques.ResultsWe found no statistically significant differences in the metrics used to describe the triggering potentials and S-MUPs.ConclusionsWe conclude that DE-STA is an accurate and efficient method to obtain a large number of intramuscular motor unit potentials and their corresponding S-MUP in proximal and distal muscles.
