Can contextual cues control consummatory successive negative contrast?
Can contextual cues control consummatory successive negative contrast?
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DOI：
10.1016/j.lmot.2007.11.001
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发表时间：
2008-05-01
影响因子：
1.4
通讯作者：
Papini, Mauricio R.
中科院分区：
文献类型：
--
作者：
Daniel, Alan M.;Wood, Michael;Papini, Mauricio R.
暴露于动机降低的大鼠表现出行为恶化。这种现象被称为连续负对比（SNC），发生在工具性和完成性反应（iSNC，cSNC）中。而iSNC是与违反奖励预期检索预期的目标（线索回忆），cSNC涉及奖励拒绝，可能只需要识别记忆检索消费。本文报道的三个受试者内实验表明，线索回忆记忆在某些条件下也可以在cSNC中运行。当动物在引入刺激物（16%或2%蔗糖溶液）之前的平均90秒间隔期间暴露于条件化环境时，而不是在进入环境后立即获得蔗糖（实验1），获得了小但显著的cSNC效应。无论是同时对比（实验2），也不是简单的顺序效应（实验3）有助于这种cSNC的受试者内版本。这些结果表明，cSNC可以转移到一个线索回忆模式与适当的训练参数。(C)2007年爱思唯尔公司All rights reserved.
Rats exposed to incentive downshift show behavioral deterioration. This phenomenon, called successive negative contrast (SNC), occurs in instrumental and consummatory responses (iSNC, cSNC). Whereas iSNC is related to the violation of reward expectancies retrieved in anticipation of the goal (cued-recall), cSNC involves reward rejection and may require only recognition memory retrieved at consumption. The three within-subject experiments reported here suggest that cued-recall memory can also operate in cSNC under some conditions. A small but significant cSNC effect was obtained when animals were exposed to the conditioning context during an average 90-s interval before the introduction of the incentive (either 16% or 2% sucrose solutions), rather than being given immediate access to the sucrose upon entry into the context (Experiment 1). Neither simultaneous contrast (Experiment 2) nor simple sequential effects (Experiment 3) contribute to this within-subject version of cSNC. These results suggest that cSNC can be shifted to a cued-recall mode with appropriate training parameters. (C) 2007 Elsevier Inc. All rights reserved.