Abstract
Long term monotonous driving has been often found to decrease the driver's arousal level and affect on his/her property of perception, cognition and judgment. It is necessary to support safety driving according to driver's physical and mental state. In this study, we examined the influence of seat characteristics on the driver's psychosomatic state by measuring biological signal measurement including brain wave and electrocardiogram and finger plethysmograph. As a result, it has been understood that the seating posture has an influence on the driver's drowsiness as well as long term seating fatigue. Moreover, we proposed four term hypothesis for driving state which classifies the mind-and-body state of a driver at four states. This hypothesis was also tried to verify with these biological signal analysis in this study.
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