Behaviour of motor unit action potential rate, estimated from surface EMG, as a measure of muscle activation level

Table 2 Simulation protocols. Each row represents a simulation. The simulation number is shown in the left column; the settings of all variables are shown in the other columns. In the third simulation, the number of MUs and firing rate are increased simultaneously in steps; each row in the first two columns represents a step.

	Simulation settings
Simulation number	Number of MUs	Firing rate (pps)	Number of fibers per MU	Fibre diameter (μm)	Thickness subcutaneous layer (mm)	SNR (dB)
1	a: 1–10 in steps of 1, 15–30 in steps of 5 b: 12–120 in steps of 12, 120–300 in steps of 60	Mean: 12, SD: 1	750	55	2	1000
2	a: 5 b: 10	Mean: 8 to 20 in steps of 2, SD: 1	750	55	2	1000
3	1	10	750	55	2	1000
	2	10
	4	10
	5	11
	6	12
	7	12.75
	8	13.5
	10	14
	11	15
	12	16
4	5	Mean: 12, SD: 1	5, 50, 100, 250, 400, 600, 750, 800, 900, 1000	55	2	1000
5	5	Mean: 12, SD: 1	750	Mean: 40 to 100 in steps of 10, SD: 5 to 35 in steps of 5	2	1000
6	a: 5 b: 10	Mean: 12, SD: 1	750	55	0.5, 1, 2, 3, 4, 5	1000
7	a: 5 b: 10 c: 15	Mean: 12, SD: 1	750	55	2	3, 6, 10, 15, 20, 50, 100, 1000

ISSN: 1743-0003