Additivity of the effects of retention interval and context change on latent inhibition: Toward resolution of the context forgetting paradox
Additivity of the effects of retention interval and context change on latent inhibition: Toward resolution of the context forgetting paradox
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DOI：
10.1037/0097-7403.23.3.283
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发表时间：
1997-07-01
期刊：
影响因子：
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通讯作者：
Bouton, ME
中科院分区：
文献类型：
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作者：
Rosas, JM;Bouton, ME
三个实验研究了大鼠在潜伏抑制范式中的保持间隔和上下文转换效应。在实验1中，28天的保持间隔取消了上下文切换对潜伏抑制的影响。在实验2中，在条件反射之前重新暴露于背景，以28天的间隔重新建立了背景切换效应。在这种情况下，保持间隔和上下文切换的效果是加性的：潜在抑制最弱时，保持间隔和上下文切换相结合。实验3以28天为间隔重复了情境转换效应。结果表明，上下文转换和保持间隔效应可能是基于同一个过程。语境转换效应可能会随着时间的推移而减弱，因为物理语境嵌入在上级的时间语境中;当时间语境发生变化时，动物无法检索物理语境。这一观点有助于解决一个悖论，已注意到的背景变化理论的遗忘。
Three experiments with rats examined retention interval and context switch effects factorially in the latent inhibition paradigm. In Experiment 1, a 28-day retention interval abolished a context switch effect on latent inhibition. In Experiment 2, re-exposure to the contexts before conditioning re-established the context switch effect at the 28-day interval. In this case, the retention interval and context switch effects were additive: Latent inhibition was weakest when the retention interval and context switch were combined. Experiment 3 replicated the context switch effect at the 28-day interval. The results suggest that context switch and retention interval effects may be based an the same process. Context switch effects may weaken over time because physical contexts are embedded in superordinate temporal contexts; animals fail to retrieve physical context when the temporal context changes. This view helps resolve a paradox that has been noted for contextual change theories of forgetting.