The role of contextual conditioning in the effect of reinforcer devaluation on instrumental performance by rats
The role of contextual conditioning in the effect of reinforcer devaluation on instrumental performance by rats
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DOI：
10.1016/j.beproc.2009.12.017
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发表时间：
2010-03-01
影响因子：
1.3
通讯作者：
Dickinson, Anthony
中科院分区：
文献类型：
--
作者：
Jonkman, Sietse;Kosaki, Yutaka;Dickinson, Anthony
在对食物产生条件反射之前，不同组的大鼠接受了不同程度的训练，以控制食物搅拌器的杠杆压力。这一贬值的抑制剂减少了反应在随后的灭绝和加强测试的反应程度是独立的工具培训的数量。此外，在厌恶条件反射和消退测试之间插入背景消退降低了贬值效应的大小，从而表明巴甫洛夫背景条件反射可能在工具贬值效应中发挥作用。(C)2010爱思唯尔有限公司版权所有。
Different groups of rats received different amounts of training to lever press for a food reinforcer before an aversion was conditioned to the food. This devaluation of the reinforcer reduced responding in both subsequent extinction and reinforced tests of responding to a degree that was independent of the amount of instrumental training. Moreover, interpolating context extinction between aversion conditioning and the extinction test reduced the magnitude of the devaluation effect, thereby indicating that Pavlovian contextual conditioning may play a role in the instrumental devaluation effect. (C) 2010 Elsevier B.V. All rights reserved.