Motor unit contribution to surface-EMG. I. Experimental findings

Roeleveld, Karin; Stegeman, Dick F.; Blok, Joleen H.; Vingerhoets, Dick M.

doi:10.1109/iembs.1996.647527

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“…Blok et al1 modeled a linear quadrupole, which mimics a propagated MUP, within a cylinder of radius 40 mm and a fat layer of 2 mm, and obtained an SEMG amplitude power function of approximately 3. The same group found that in a comparison of SEMG with simultaneous needle EMG, the power function was less than 3 for unipolar and bipolar surface recordings 18. They concluded that SEMG will “see” more motor units in the muscle than their model predicted.…”

Section: Discussionmentioning

confidence: 98%

“…A number of models have been proposed to describe these effects 1, 9, 14. Correlations between needle EMG and SEMG findings have also been investigated 15, 18, 19. The extraction of individual motor unit potentials (MUPs) from surface recordings has been improved by using arrays of electrodes, resulting in so‐called high‐spatial‐resolution EMG (HSR‐EMG) 6, 12, 13…”

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confidence: 99%

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