Hinson R E
J Exp Psychol Anim Behav Process. 1982 Jan;8(1):49-61.
Preconditioning experience with the unconditional stimulus (UCS) retards subsequent excitatory conditioning. Three experiments demonstrated that this UCS retardation effect is attenuated by associative manipulations of contextual stimuli of the UCS preexposure environment. The UCS retardation effect was reduced by (a) altering contextual stimuli between preexposure and conditioning (Experiment 1), (b) latently inhibiting contextual stimuli prior to UCS preexposure (Experiment 2), and (c) extinguishing contextual stimuli subsequent to UCS preexposure (Experiment 3). Although UCS preexposure retarded excitatory conditioning, the results of Experiment 4 demonstrated that UCS preexposure facilitated inhibitory conditioning. These results indicate that an association between contextual stimuli and the preexposed UCS contributes to the effects of preconditioning UCS experience on subsequent learning.
使用无条件刺激（UCS）进行的预处理经历会延缓随后的兴奋性条件作用。三项实验表明，这种UCS延缓效应会因对UCS预暴露环境中的情境刺激进行联想操作而减弱。UCS延缓效应通过以下方式降低：（a）在预暴露和条件作用之间改变情境刺激（实验1）；（b）在UCS预暴露之前对情境刺激进行潜伏抑制（实验2）；以及（c）在UCS预暴露之后消除情境刺激（实验3）。尽管UCS预暴露延缓了兴奋性条件作用，但实验4的结果表明，UCS预暴露促进了抑制性条件作用。这些结果表明，情境刺激与预暴露的UCS之间的关联有助于预处理UCS经历对后续学习的影响。
