Abstract
The purpose of this study is to examine the acquisition process of discrimination between congruent figures, and to clarify the change in the amount of blood in the brain with near-infrared spectroscopy. We used the following procedures in this experiment. The problem is to select the congruent figure from some figures using parallel, rotation, and symmetry movement. During the first experiment, the subject uses and answers a transparent sheet where the figure was drawn. In the second experiment, the subject is to answer only in the image by his mind. We considered the change repeating five trials with both experiments for university student's subject. The approach employed in this analysis was as follows. We installed the 1-channel near-infrared spectroscopy in the right side frontal lobe point of subject's brain, and measured the change in the amount of blood in the brain for the experiment period. And, we examined the feature of the amount of the change of oxyHb, deoxyHb, and totalHb, and compared differences in two experiments. As a result of the experiment, the following were clarified to us. When sheet use is compared with sheet unused, the subject adopts the different method of problem solving for two experiments. It is concluded that whether the subject use the sheet or not is related to the change of the amount of blood in the brain.
