Evaluation of cerebral activity by means of measuring blood flow and physiological polytypism from the viewpoint of physiological anthropology

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Recently, cerebral blood flow has been estimated by non-invasive measurement of hemodynamic changes in order to evaluate the cerebral activity using the near-infrared spectroscopy (NIRS) in the filed of physiological anthropology. Present research was conducted to reveal the applicability of prefrontal cerebral activity to evaluate technological adaptability from the viewpoint of physiological polytipism. The procedure of the experiment was explained to the subjects and informed consent was obtained from them.1. We revealed that hemodynamic changes could be divided into five different patterns. The NIRS shows relative changes of cerebral activity. On the other hand, the time resolved spectroscopy (TRS) shows the absolute value of individual cerebral activity. We accumulated the fundamental data of individual absolute prefrontal cerebral activity, and applied cerebral activity measurement for playing game, operating industrial products and etc.2. Absolute value of prefrontal activity of … More the experienced game player decreased while playing race game which consisted with the results of previous study using PET and fMRI.3. We investigated the applicability of cerebral blood flow in evaluating the technological adaptability for operating industrial products. Females showed to be quick in making decision to select the right one from the menu of many items and showed lower prefrontal cerebral activity than males.4. We investigated the difference of cerebral activity of prefrontal region between young adults and elderly during driving. The less experienced young adults display a greater increase in prefrontal cerebral activity than do the experienced young adults during driving. Prefrontal cerebral activity in elderly subjects is lower than that of young adults at rest and shows little variation than young adults during driving.Although, we need to measure other cerebral regions together with prefrontal region and other parameters to investigate technological adaptability from the viewpoint of physiological polytypism, it is possible to evaluate the technological adaptability by means of measuring cerebral hemodynamic changes. Less