Fig. 5

Effect of TAES on the changes of EEG power spectra at each individual channel at different propofol concentrations. a: EEG power spectra at propofol concentration of 1 μg/mL; b: EEG power spectra at propofol concentration of 3 μg/mL. In each plot, the averaged absolute EEG power before TAES (red line), during TAES (green line), and after TAES (blue line) is plotted at each electrode