Bueno José Lino Oliveira, Holland Peter C
Departamento de Psicologia e Educação-FFCLRP, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
Behav Processes. 2008 Nov;79(3):132-47. doi: 10.1016/j.beproc.2008.07.001. Epub 2008 Jul 10.
Rats were trained in a Pavlovian serial ambiguous target discrimination, in which a target cue was reinforced if it was preceded by one stimulus (P-->T+) but was not reinforced if it was preceded by another stimulus (N-->T-). Test performance indicated that stimulus control by these features was weaker than that acquired by features trained within separate serial feature positive (P-->T+, T-) and serial feature negative (N-->W-, W+) discriminations. The form of conditioned responding and the patterns of transfer observed suggested that the serial ambiguous target discrimination was solved by occasion setting. The data are discussed in terms of the use of retrospective coding strategies when solving Pavlovian serial conditional discriminations, and the acquisition of special properties by both feature and target stimuli.
大鼠接受了巴甫洛夫式序列模糊目标辨别训练，其中，如果目标线索之前出现一种刺激（P→T+），则该目标线索得到强化；但如果之前出现另一种刺激（N→T-），则该目标线索不被强化。测试表现表明，这些特征对刺激的控制比在单独的序列特征阳性（P→T+，T-）和序列特征阴性（N→W-，W+）辨别训练中获得的特征对刺激的控制要弱。观察到的条件反应形式和迁移模式表明，序列模糊目标辨别是通过情境设定解决的。本文根据解决巴甫洛夫式序列条件辨别时回顾性编码策略的使用，以及特征刺激和目标刺激特殊属性的获得来讨论这些数据。
