Lin Tzu-Ching E, Dumigan Natasha M, Recio Sergio A, Honey R C
a School of Psychology, Cardiff University , Cardiff , UK.
b Department of Experimental Psychology , University of Granada , Granada , Spain.
Q J Exp Psychol (Hove). 2017 Aug;70(8):1504-1515. doi: 10.1080/17470218.2016.1188973. Epub 2016 Jun 9.
Three experiments investigated mediated configural learning in male rats. In Experiment 1, after exposure to audio-visual compounds AX and BY, rats received trials where X was paired with shock, and Y was not. The idea that conditioning with X enables the evoked configural representation of AX to be linked to shock received support from the facts that while AX provoked more fear than BX, there was no difference between BY and AY. Similarly, Experiment 2 showed that after exposure to AX and BY, separate pairings of X and Y with shock resulted in more fear to AX and BY than AY and BX. In Experiment 3, rats in group consistent received separate exposures to A and X in Context C, and B and Y in D, while those in group inconsistent received A and X (and B and Y) in both C and D. After rats had received shocks in both C and D, rats in group consistent showed more fear to AX and BY than to BX and AY, but this was not the case in group inconsistent. These results indicate that configural representations, formed either by presenting auditory and visual stimuli as parts of a compound or in a shared context, are subject to a process of mediated learning.
三项实验研究了雄性大鼠的中介构型学习。在实验1中，大鼠在接触视听复合刺激AX和BY后，接受X与电击配对而Y不与电击配对的试验。用X进行条件作用能使诱发的AX构型表征与电击相联系，这一观点得到了以下事实的支持：虽然AX比BX引发更多恐惧，但BY和AY之间没有差异。同样，实验2表明，在接触AX和BY后，将X和Y分别与电击配对，导致对AX和BY的恐惧比对AY和BX的恐惧更多。在实验3中，一致性组的大鼠在情境C中分别接触A和X，在情境D中分别接触B和Y，而非一致性组的大鼠在情境C和情境D中都接触A和X（以及B和Y）。在大鼠在情境C和情境D中都接受电击后，一致性组的大鼠对AX和BY的恐惧比对BX和AY的恐惧更多，但非一致性组并非如此。这些结果表明，构型表征无论是通过将听觉和视觉刺激作为复合刺激的一部分呈现，还是在共享情境中呈现而形成的，都要经历中介学习过程。
