Abstract
In this study passenger's sensibility change was investigated by changing vehicle speed in real driving situation. In order to measure human sensibility averaged R-R interval, GSR, and skin temperature, which are not much affected by noise caused while driving were used. The physiological responses were compared with subjective evaluation by self-report method. We report some of preliminary results relating to changes of autonomic responses elicited by varying a vehicle speed (0. 30. 60. 90, 120 km/h) during daytime and nighttime. Healthy human subjects (n=5) were participated in the experiments. Averaged R-R interval values and skin temperature decreased as the speed increased both during daytime and nighttime. The GSR amplitude increased as the speed increased both during daytime and nighttime. All kinds of physiological signals including averaged R-R interval, skin temperature, and GSR, showed the result that the activity of sympathetic nervous system of the ANS increased as the vehicular speed increased.
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