Contextual Conditioning with Lithium-Induced Nausea as the US: Evidence from a Blocking Procedure
Contextual Conditioning with Lithium-Induced Nausea as the US: Evidence from a Blocking Procedure
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美国锂诱发恶心的情境调节：来自阻断程序的证据
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
G. Hall
中科院分区：
文献类型：
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作者：
M. Symonds;G. Hall
在两个实验中，大鼠在特定环境中待了一段时间后接受了氯化锂（LiCl）注射。在随后的训练阶段评估了对环境的条件厌恶的获得，在训练阶段，大鼠在转移到环境并接受LiCl注射之前，在家庭笼子中给予蔗糖。这个过程阻断了对蔗糖的厌恶（实验1A）。阻断效应也被发现（实验1B），通过设计一个程序来确保在复合调理过程中充分消耗蔗糖。在实验2中，所有受试者在第一阶段的训练中都经历了两种截然不同的情境，一种与LiCl注射有关，另一种与LiCl注射无关。在复合条件作用阶段，给予前者的受试者比给予后者的受试者对蔗糖的了解程度要低。这一结果被解释为表明，在这个阻断过程中，有效的线索可以是那些唯一地定义了第一阶段训练的特定地点的线索。
Abstract In two experiments, rats received injections of lithium chloride (LiCl) after spending time in a distinctive context. The acquisition of a conditioned aversion to the context was assessed in a subsequent stage of training in which the rats were given sucrose in the home cage before being transferred to the context and receiving an injection of LiCl. The acquisition of an aversion to sucrose was blocked by this procedure (Experiment 1A). The blocking effect was also found (Experiment 1B) with a procedure designed to ensure full consumption of the sucrose during compound conditioning. In Experiment 2, all subjects experienced two distinctively different contexts in the first stage of training, one associated with a LiCl injection and one not. Subjects given the former during the compound conditioning stage learned less well about sucrose than did subjects given the latter. This result is interpreted as showing that the effective cues in this blocking procedure can be those that uniquely define the particular place in which the first stage of training is given.