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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.

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

  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