Attenuation of the renewal effect by extinction in multiple contexts
Attenuation of the renewal effect by extinction in multiple contexts
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DOI：
10.1006/lmot.1998.1022
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发表时间：
1999-02-01
影响因子：
1.4
通讯作者：
Schachtman, TR
中科院分区：
文献类型：
--
作者：
Chelonis, JJ;Calton, JL;Schachtman, TR
在两个实验中，在一种情况下（上下文1），给缺水的大鼠单独一对蔗糖溶液和LiCl。然后，在情境I中，一些受试者接受了三次非强化的蔗糖暴露，也就是说，灭绝。其他受试者在不同的背景下接受了这三种蔗糖消退试验（例如，背景2）。第三组受试者在三种不同的背景下（背景2、3和4）接受了一次灭绝试验。在该处理后，将大鼠返回到情境1并测试它们对蔗糖的厌恶。受试者仅在一种环境中接受消退试验，而不是在条件反射环境中（例如，情境2）在测试中产生了比情境1中给予消退的受试者更大的厌恶蔗糖，也就是说，发生了更新效应。此外，在三种不同的情况下灭绝的群体表现出衰减更新相对于受试者只接受灭绝试验在上下文2。讨论的重点是更新效应背后的可能机制，（C）1999年学术出版社。
In two experiments, water-deprived rats were given a single pairing of a sucrose solution with LiCl in one context (Context 1). Some subjects then received three nonreinforced exposures to sucrose, that is, extinction, in Context I. Other subjects received these three sucrose extinction trials in a different context (e.g., Context 2). A third group of subjects was included that received one extinction trial in each of three different contexts (Contexts 2, 3, and 4). Following this treatment, the rats were returned to Context 1 and were tested for their aversion to sucrose. Subjects given extinction trials only in one context other than the conditioning context (e.g., Context 2) yielded a greater aversion sucrose at test than subjects given extinction in Context 1, that is, a renewal effect occurred. Moreover, the groups given extinction in three different contexts exhibited attenuated renewal relative to subjects that received extinction trials only in Context 2. The discussion focuses on the possible mechanism underlying the renewal effect, (C) 1999 Academic Press.