Figure 1.

The effects of post-training and pre-test administration of lithium on step-down latency. Four groups of animals were used in this experiment. One group of animals received post-training and pre-rest injections of saline. The other groups received post-training injection of lithium (10 mg/kg). On the test day, one group of these animals received saline and the other two groups received lithium (5 or 10 mg/kg, IP), 45 min before testing. Each bar represents the median±quartiles for 10 animals. +++p < 0.001 compared to saline-saline group. ** p < 0.01 compared to lithium-saline group