Contrasting AAC and ABC renewal: the role of context associations
Contrasting AAC and ABC renewal: the role of context associations
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DOI：
10.3758/s13420-010-0007-1
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发表时间：
2011-03-01
影响因子：
1.8
通讯作者：
Miller, Ralph R.
中科院分区：
文献类型：
--
作者：
Laborda, Mario A.;Witnauer, James E.;Miller, Ralph R.
大鼠被用于舔抑制准备，以评估条件刺激（CS）上下文和上下文非条件刺激（US）协会的实验灭绝的贡献。实验1通过确定当单独CS试验（即，灭绝治疗）是在收购的背景下（AAC更新），相对于一个环境，是中立的美国（ABC更新）。在前一种情况下观察到对CS的响应的恢复比在后一种情况下少，将AAC更新弱于ABC更新的发现扩展到我们的舔抑制制剂。实验2评估的贡献，收购上下文，美国协会灭绝的CS通过检查的效果postextinction暴露于收购上下文响应熄灭CS。这种操作增强了对AAC中熄灭的CS的响应，但不是ABC，更新。实验3解决了CS-收购上下文关联的贡献，通过检查潜在的中性刺激，在化合物与目标CS在消光处理，掩盖CS-收购上下文关联。这种操作增强了对AAC中熄灭的CS的响应，但不是ABC，更新。研究结果强调了关联在物种灭绝和更新中的重要作用。
Rats were used in a lick suppression preparation to assess the contribution of conditioned-stimulus (CS)-context and context-unconditioned-stimulus (US) associations to experimental extinction. Experiment 1 investigated whether strengthening the CS-acquisition context association enhances extinction by determining whether stronger extinction is observed when CS-alone trials (i.e., extinction treatment) are administered in the acquisition context (AAC renewal), relative to a context that is neutral with respect to the US (ABC renewal). Less recovery of responding to the CS was observed in the former than in the latter case, extending the finding that AAC renewal is weaker than ABC renewal to our lick suppression preparation. Experiment 2 assessed the contribution of the acquisition context-US association to extinction of a CS by examining the effect of postextinction exposure to the acquisition context on responding to the extinguished CS. This manipulation enhanced responding to the extinguished CS in AAC, but not ABC, renewal. Experiment 3 addressed the contribution of the CS-acquisition context association by examining the potential of a neutral stimulus, presented in compound with the target CS during extinction treatment, to overshadow the CS-acquisition context association. This manipulation enhanced responding to the extinguished CS in AAC, but not ABC, renewal. The results stress the important role of contextual association in extinction and renewal.