Abstract
There are individual differences in acquisition of motor skills, and recognizing of individuality to motor skill learning is useful for efficient training. Some studies suggest that the activating area of the brain differs before and after training of motor skills, suggesting that the brain activity is switched before and after the establishment of the learning. Therefore, it is considered that switching of brain activity mode is related to the speed of motor learning and accuracy of the motor skill. In this study, many experimental participants increased not only the time between task blocks, but also the time for pressing 3 buttons in the block by swapping the order of the blocks, as upper hierarchy. Although the button pressing order in the block is the same, the time for button pressing time in the block increased, because the mode of the brain activity for automatically performing the motor action is switched to the mode that consciously controls the movement of the pressing the button in a certain order. The result suggests that in acquiring hierarchical motor skills, many people do not strongly separate the motor learning among the hierarchies, and it can be interpreted that brain attempts to learn again from the lower hierarchy when new patterns of order in the upper hierarchy is required to learn.
