Abstract
The purpose of this study is to control the myoelectric prosthetic hand that can grasp various objects stably. The electromyogram (EMG) signals of the flexor and extensor muscle of the forearm were recorded by subjects who performed two movements of the digital flexion and extension in a maximum voluntary contraction. The integrated EMG (iEMG) and mean power frequency (MNF) were calculated from the recorded results. The difference values of iEMG and MNF between the start and the end of the movements were calculated. In the movement of the digital flexion, the difference value of iEMG in the flexor was smaller than that in the extensor, and the difference value of MNF in the extensor was smaller than that in the flexor. In the movement of the digital extension, the difference value of iEMG in the extensor was smaller than that in the flexor, and the difference value of MNF was low in both muscles.
