The Difference of Amount of Blood in Brain of Reproduction Problem and Creation Problem of Solid

Abstract

The purpose of this study is to examine the acquisition process of method of reproducing solid from photograph and method of freely creating solid, and to clarify the change in the amount of blood in the brain with near-infrared spectroscopy. The approach employed in this analysis was as follows. We installed the I-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. 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. 1) The situation of deoxy Hb in subject's brain was different in two problems. 2) In the reproduction problem of the solid, the feature of changing oxyHb corresponded to the kind of the photograph which the subject selected. It is concluded that whether the subject make the reproduction of the solid or the creation of the solid is related to the change of the amount of blood in the brain.