DeVito P L, Cashman L, Petka K
Department of Psychology, Saint Joseph's University, Philadelphia, PA 19131.
Psychol Rep. 1994 Jun;74(3 Pt 2):1363-81. doi: 10.2466/pr0.1994.74.3c.1363.
The effect of prior excitatory conditioning to a stimulus not included in the compound conditioning phase of the typical blocking experiment was assessed in three CER studies. The first experiment, in which rat subjects received A+, C+, or a combination of A+/C+ trials prior to AB+ conditioning, showed that A+/C+ or C+ training produced as robust blocking as A+ training relative to a control group with no prior conditioning. A second experiment which was designed to assess the role of background cues in mediating the blocking effect indicated that background cues were not responsible for the A+ or C+ effects, while a third experiment showed these same effects were not mediated by stimulus generalization. The findings of these experiments are interpreted in the context of pseudoconditioning-induced rehearsal of a US representation in short-term memory.
在三项条件性情绪反应（CER）研究中，评估了对典型阻断实验复合条件作用阶段未包含的刺激进行先前兴奋性条件作用的效果。在第一个实验中，大鼠受试者在AB+条件作用之前接受A+、C+或A+/C+组合试验，结果表明，相对于没有先前条件作用的对照组，A+/C+或C+训练产生的阻断效果与A+训练一样强烈。第二个旨在评估背景线索在介导阻断效应中作用的实验表明，背景线索与A+或C+效应无关，而第三个实验表明这些相同的效应不是由刺激泛化介导的。这些实验的结果是在假条件作用诱导的短期记忆中对美国表征进行排练的背景下进行解释的。
