Multichannel Surface EMG Decomposition Based on Measurement Correlation and LMMSE

Table 1

The number of reconstructed IPTs (Nr) (mean ± std. dev.), true positive rate (TPR) (mean ± std. dev.), and misplaced rate (MR) (mean ± std. dev.) for different decomposition methods.

Methods	Parameters	SNR (dB)
		−10	−5	0	5	10
Measurement matrix autocorrelation	Nr	8.2 ± 1.5	9.6 ± 0.6	9.6 ± 0.6	9.8 ± 0.5	9.8 ± 0.5
	TPR (%)	85.7 ± 1.9	97.6 ± 0.9	99.1 ± 0.3	99.4 ± 0.2	99.4 ± 0.5
	MR(%)	3.98 ± 1.06	2.16 ± 0.67	1.02 ± 0.23	0.98 ± 0.13	0.91 ± 0.06
GCKC	Nr	5.0 ± 0.7	9.0 ± 1.2	10 ± 0	10 ± 0	10 ± 0
	TPR (%)	85.9 ± 4.0	99.5 ± 0.2	99.9 ± 0.1	99.6 ± 0.4	99.9 ± 0.0
	MR(%)	3.59 ± 1.12	1.05 ± 0.33	0.69 ± 0.26	0.66 ± 0.35	0.58 ± 0.17
MC-LMMSE	Nr	10 ± 0	10 ± 0	10 ± 0	10 ± 0	10 ± 0
	TPR (%)	92.8 ± 1.0	99.7 ± 0.0	100 ± 0	100 ± 0	100 ± 0
	MR(%)	2.81 ± 0.85	1.02 ± 0.13	0 ± 0	0 ± 0	0 ± 0