A motor learning by observation using still images

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The purpose of this study was to examine whether movement information embodied in the still images could be useful information for perceptual motor learning. Upper limb movements during the ball-throwing were selected for this study. Two experiments were conducted. First, ten subjects observed stick pictures movies which are systematically delayed the timing of the elbow extension, and pushed the mouse button when the significant movement difference was detected. Next, they confirmed the detected timing form the observation of the still images of the movements. The results showed that the timing were almost the same between movements and static images. The angles, angular velocities, and torques about the tow joints of the upper limb were calculated. Then, it was cleared that the timing when the torque about the elbow joint just rises was the detected instant.