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Background Conventional myoelectric prosthesis (myo-prosthesis) training involves repetitive grasping and manipulation training, which requires considerable training time. It is necessary to develop a short and efficient myo-prosthesis training. The purpose of this study was to verify the immediate and sustained effects of action observation (AO) using virtual reality (VR) on myo-prosthesis control and clarify the effect of visual feedback of electromyogram (EMG) signals during AO using VR. Methods We evaluated 24 healthy right-handed individuals wearing a myo-prosthesis simulator in their dominant hands. We divided participants into three groups: VR video observation with EMG presentation during manipulation (VR+), VR video observation without EMG presentation (VR), and control group. We evaluated prosthetic control skills using the Gripping force adjustment test (GFAT) and Bowknot task immediately before and after AO and one week later. Additionally, we evaluated level of immersion, motivation, and enjoyment during AO. Results The rate of change in the GFAT one week after the intervention was significantly greater in the VR+ (p |
