The Y maze was performed five months following the isoflurane exposure.

<p>A: The number of learning trails to reach the final criterion. No difference was found among the groups. B: Avoidance errors. No difference was found among the groups. C: Discrimination errors. The mice in the Ad-iso group made significantly fewer discrimination errors than the mice in the Ad-con group. No difference was found between the two wild-type groups. *: p<0.05 compared with the Ad-con group. D: No difference in the foot shock voltage was found among the groups. (Ad-iso, n = 20; Ad-con, n = 20; Wt-iso, n = 16; Wt-con, n = 13).