Optimal selection of electrodes for muscle electrical stimulation using twitching motion measurement

Muscle electrical stimulation envisions a wide range of human augmentation application. However, the applications commonly have issue of optimal electrodes placement. In this paper, we propose a method to select the optimal electrodes placement for finger flexion using twitching motion measurement. We delivered electrical stimulation producing twitching motion and measured the acceleration. By summing and averaging the acceleration waveforms and taking the difference between the maximum and minimum value, we measured the contribution of the electrical stimulation and used it to select the optimal electrodes pair for the movement. Preliminary experiment with four electrodes showed feasibility of our method.