Effects of anesthesia drugs on time spent in target zone from control and anesthetic groups. Values represent mean ± SEM of time spent in target zone (percentage time spent in target zone from Morris water maze training). *p < 0.001 versus control group. **p < 0.001 versus Xyl.-Ket. group. #
p < 0.01 versus propofol, Ole.-Pro. and Ole.-Pro.-Ket. groups. a
p < 0.05 versus Xyl.-Ket. group. b
p < 0.05 versus Pro.-Ket. group. Pro.-Ket. propofol-ketamine, Xyl.-Ket. xylazine-ketamine, Ole.-Pro. oleuropein-propofol, Ole.-Pro.-Ket. oleuropein-propofol-ketamine, Ole.-Xyl.-Ket. oleuropein-xylazine-ketamine (n = 8 rats per group)