Physiological Indicators of Driver Sleepiness

In our simulated driving experiments, subjects exhibited repeated episodes of dozing off, accompanied by consistent patterns in EEG and EOG signals. The acquired EEG and vertical electrooculography (VEOG) signals- underwent manual labeling. As illustrated in the Figure, we manually labeled the signals as follows: (1) the Type I apha wave epoch (AWE), whose start and endpoints are $s_a^1$ and $e_a^1$  in Doze1, or are $s_a^2$ and $e_a^2$ in Doze2; (2) the rising edge waveform, whose start point is $s_d^1$ in Doze1 or $s_d^2$ in Doze2; (3) the falling edge waveform, whose end point is $e_d^1$ in  Doze1 or $s_d^2$ in Doze2.