Fig. 4.

The training period in the Morris water maze (MWM) test. Comparison of the acquisition performance according to escape latency (a), distances moved (b), swim speed (c), and representative swim paths (d) during the training period on the Morris water maze task among the three groups of rats (the control group, the STZ + Vehicle (Vh) group, and the STZ + Ex-4 group). The training task was performed with four trials per day for five successive days. n = 6–8. *P < 0.05 for STZ + Vh vs control; †P < 0.05 for STZ + Ex-4 vs STZ + vh