Figure 8. Responses of maximal power (PWRmax) and preload-adjusted maximal power indexes (PWRmax/EDD2, PWRmax/EDA2, PWRmax/EDV2) on increases in propofol plasma concentration. Data are presented as a percentage of the lowest propofol plasma concentration. Only changes in PWRmaxdisplay statistical significance (ANOVA). Significance for successive differences within each variable is indicated by an asterisk.