Water maze latency time : After 10 days of water maze training, each group of space exploration significantly reduced latency time, each group on day 10 compared with 1 day incubation period, P values less than 0.01. 水迷宫潜伏期时间:经过10天的水迷宫训练,各组空间探索潜伏期时间明显减少,各组在第10天与第1天潜伏期比较,P值均0.01。