Results The times of active avoidance reaction, passive avoidance reaction and spatial exploration ability of AD rats in smoking group significantly decreased(P<0.01) compared with nonsmoking group.
结果 吸烟组主动回避能力和被动回避能力及空间探索能力较不吸烟组明显下降（P<0.01）；
Several behaviour models such as active avoidance reaction (AAR), once passive avoidance reaction (OPAR), spatial discrimination memory (SDM), were used to research the process of learning and memory.
采用主动回避反应(aar)，一次性被动回避反应(OPAR)，空间分辨记忆(SDM) 3种模式对学习记忆过程进行系统研究。
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