教示方法の違いがのこぎり引きの切断成績と脳活動に及ぼす影響

抄録

The purpose of this study is to examine hemodynamic brain activity while cutting wood according to different teaching methods. Near-infrared spectroscopy (NIRS), which is a brain activity measurement device, was used in experiments. Participants were divided into an instructed group and a trial+instructed group. Two types of experiment were carried out in each group. The instructed group cut wood after being given instructions in the first experiment and repeated this in the second experiment. The trial+instructed group cut wood without having received instructions in the first experiment and cut it again after instructions had been given in the second experiment. Cutting results and cerebral hemodynamic responses were measured. As a result, the cutting length of the instructed group significantly increased in the second experiment, compared to the first experiment. In contrast, although the cutting length of the trial+instructed group did not change, hemodynamic responses in the frontal area significantly increased in the second experiment, compared to the first experiment. The hemodynamic changes might reflect the strategies verifying new knowledge given after the experience.