Analysis of Conducting Waves Using Multi-channel Surface EMG Depends on Electrodes in Multiple Directions

The purpose of this study is to consider the difference in the characteristics of conducting waves depending on the electrode width and direction. The electrodes proposed array electrodes that have five electrodes with widths of 10, 9, 8, 7, and 6 mm arranged in a fan shape. By incorporating a DIP switch between the electrode and the amplifier and turning it ON (short circuit), it is possible to change the electrode shape without replacing it. The analysis used the multi-channel method. As a result, when all are short-circuited, it is possible to estimate the mixing of noise in each channel. It was found that an averaged conducting wave can be obtained by widening the electrode width. In addition, from the result of more conducting waves can be extracted from the electrodes attached in the direction of the muscle fibers, it is possible to estimate the direction of the muscle fibers.