González Felisa, Quinn Jennifer J, Fanselow Michael S
Departamento de Psicología Experimental y Fisiología del Comportamiento, Facultad de Psicología, Universidad de Granada, Campus La Cartuja, 18071 Granada, Spain.
J Exp Psychol Anim Behav Process. 2003 Jan;29(1):78-83.
Rats were conditioned across 2 consecutive days where a single unsignaled footshock was presented in the presence of specific contextual cues. Rats were tested with contexts that had additional stimulus components either added or subtracted. Using freezing as a measure of conditioning, removal but not addition of a cue from the training context produced significant generalization decrement. The results are discussed in relation to the R. A. Rescorla and A. R. Wagner (1972), J. M. Pearce (1994), and A. R. Wagner and S. E. Brandon (2001) accounts of generalization. Although the present data are most consistent with elemental models such as Rescorla and Wagner, a slight modification of the Wagner-Brandon replaced-elements model that can account for differences in the pattern of generalization obtained with contexts and discrete conditional stimuli is proposed.
大鼠在连续两天接受条件训练，在特定情境线索出现时给予一次无信号足部电击。对大鼠进行测试时，测试情境会增加或减少一些额外的刺激成分。以僵住作为条件化的指标，从训练情境中移除线索（而非添加线索）会产生显著的泛化递减。结合R. A. 雷斯克拉和A. R. 瓦格纳（1972年）、J. M. 皮尔斯（1994年）以及A. R. 瓦格纳和S. E. 布兰登（2001年）关于泛化的理论来讨论这些结果。尽管目前的数据与雷斯克拉和瓦格纳等元素模型最为一致，但我们提出了对瓦格纳 - 布兰登替代元素模型的轻微修改，该模型能够解释在情境和离散条件刺激下获得的泛化模式差异。
