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The authors propose a new simple method for controlling five fingers of computer graphics hand respectively using electromyograms signal. We manufactured five double-polar concentric ring electrodes, for measuring surface Laplacian electromyograms(Laplacian EMGs) from flexor muscle corresponding to each finger flexing action. Laplacian EMGs can detect the current flowing into the component that is proportional to the vertical surface current density. The experimental results shown the each manufactured electrode could measure the Laplacian EMG corresponding to each finger flexion without any interference and that the developed interface could control the CG hand in real time. These results infer that the proposed approach is promising as an EMG-based human-computer interface or human-machine interface. The next challenges to be addressed are to conduct the evaluation test for many subjects and to facilitate electrodes attachment.

Control of Five Finger of Computer Graphics Hand Using Electromyographic Signal Measured with Multi-channeled Small Laplacian Electrodes