不同刺激强度训练后一日龄小鸡的记忆形成  

MEMORY FORMATION FOLLOWING VARIOUSLY REINFORCEDTRAINING IN DAY-OLD CHICKS

作　　者：郑丽 王建军 翁旭初 匡培梓 

机构地区：[1]南京大学 [2]中国科学院心理研究所

出　　处：《心理学报》1997年第2期202-207,共6页Acta Psychologica Sinica

基　　金：国家自然科学基金,国家科委项目,中科院匹配经费

摘　　要：一日龄小鸡，分别接受不同浓度的回避性刺激物邻氨基苯甲酸甲酯（ＭｅＡ）训练，间隔一定时间后测试记忆保持。主要结果为：５％和２０％ＭｅＡ训练，分别使动物记忆保持１５发钟和５０分钟左右，相当于记忆形成多阶段模型中的ＳＴＭ和ＩＴＭ阶段。４０％ＭｅＡ训练，记忆保持到训练后８－１０小时，相当于不依赖新糖合成的ＬＴＭ形成的早期阶段。只有６０％以上浓度的ＭｅＡ训练才使记忆保持至少２４小时。上述结果提示。Day - old chicks were trained with varying concentrations of a taste aversant, methyl anthranilate (MeA) , and tested for retention at different time - points after training. Chicks trained with 5% and 20%MeA preserved memory about 15 minutes and 50 minutes respectively , fitting the STM and ITM of the multiple - stage model of memory formation, while those trained with 40%MeA yielded high retention level up to 8 - 10 hours, this time -course appeared to correspond with the glycoprotein - synthesis - independent stage of the LTM. Only MeA over 60% resulted in good reten- tion lasting at least 24 hours. The results demonstrated that the weak - learning. paradigm not only could dissociate the traditional three main stages of memory forma- tion (STM, ITM, LTM), but also could differentiate the LTM into an early and a later phase. This could open a new approach to the further investigations of the mechanisms of memory formation

关 键 词：一日龄小鸡 训练刺激强度 记忆阶段 

分 类 号：B843.2[哲学宗教—心理学]