Methods Several behaviour models such as active avoidance reaction (AAR), passive avoidance reaction (PAR), spatial discrimination memory(SDM),conditioned taste aversion(CTA) were used to research the ontogeny of learning and memory.

• 方法采用主动回避反应（AAR）、被动回避反应（PAR）、空间分辨记忆（SDM）和味觉厌恶条件反射（CTA）四种模式对学习和记忆过程进行系统研究。