Fig. 5. Effects of 4-h exposure to sevoflurane in young adult and aged rats on velocity of swimming during acquisition in the Morris water maze at (A and B ) 1 week, (C and D ) 4 weeks, and (E and F ) 12 weeks postexposure. There were no significant differences between sevoflurane or sham treated rats or between age groups on swim velocity in the maze (P < 0.05 at all time points, ANOVA). Data are mean ± SEM. Weeks 1, 4, and 12: n = 10 rats per treatment group for young adult rats. Aged rats: week 1, n = 7; week 4, n = 7 sham, n = 6 sevoflurane; week 12, n = 6 sham and n = 4 sevoflurane-treated.