抄録
Drowsiness causes fatal and heavily injured traffic accidents, therefore a number of studies on the detection of drowsiness or on the inhibition of it have conducted. In present study, electrocardiographic measurement which is one of the most convenient measurement methods for subjects and experimenters was chosen to detect of driver's low arousal state. The variations of R-R Interval and autonomic nervous system indexes during driving simulator were verified by employing frequency analysis and Lorenz plot analysis.
