Blair C A J, Hall Geoffrey
Department of Psychology, University of York, York YO10 5DD, United Kingdom.
J Exp Psychol Anim Behav Process. 2003 Jan;29(1):39-48.
Rats were exposed to the compound flavors AX and BX, presented in alternation, and to CX on a separate block of trials. Generalization to BX after aversion conditioning with AX was less than to CX. An equivalent effect was found when the nature of the common element was changed after preexposure but not when the common element was omitted during preexposure, during conditioning and test, or both. Rats conditioned with X alone again showed less aversion to BX than to CX; similarly, rats conditioned with a novel flavor (Y) showed less aversion to BY than to CY. These effects support the proposal that intermixed preexposure to AX and BX enhances the perceptual effectiveness of their unique features, A and B.
将大鼠交替暴露于复合味道AX和BX，并在单独的试验组中暴露于CX。在用AX进行厌恶条件反射后，对BX的泛化程度低于对CX的泛化程度。当在预暴露后改变共同元素的性质时，发现了相同的效果，但在预暴露、条件反射和测试期间或两者都省略共同元素时则没有这种效果。仅用X进行条件反射的大鼠对BX的厌恶程度再次低于对CX的厌恶程度；同样，用新味道（Y）进行条件反射的大鼠对BY的厌恶程度低于对CY的厌恶程度。这些结果支持了以下观点：将AX和BX混合预暴露可提高其独特特征A和B的感知效力。
