Fig. 3
From: Improving the recognition of grips and movements of the hand using myoelectric signals
Graph of four of the eight action groups mean absolute values - 20 s interval (24–44) covering two complete repetitions (3rd and 4th) of each group’s grip and movements. The four represent different types of grips: power (hammer), precision (jar lid), dynamic tripod (scissors), and precision handling - small objects (key). Pattern differences can be observed among the four. Note that the Key movement requires less force than the other three and shows a lower signal value despite its graph being scaled at a lower value than the others. Abbreviations for the muscle signal channels are shown on the left of each graph row