Counterconditioning of an overshadowed cue attenuates overshadowing

Aaron P. Blaisdell, James C. Denniston, Hernán I. Savastano, Ralph R. Miller
2000 Journal of Experimental Psychology Animal Behavior Processes  
In 3 Pavlovian conditioned lick-suppression experiments, rats received overshadowing treatment with a footshock unconditioned stimulus such that Conditioned Stimulus (CS) A overshadowed CS X. Subjects that subsequently received CS X paired with an established signal for saccharin (CS B) exhibited less overshadowing of the X-footshock association than subjects that did not receive the X-B pairings (Experiment 1). Experiment 2 replicated this effect and controlled for some additional alternative
more » ... ccounts of the phenomenon. In Experiment 3, this recovery from overshadowing produced by counterconditioning CS X was attenuated if CS B was massively extinguished prior to counterconditioning. These results are more compatible with models of cue competition that emphasize differences in the expression of associations than those that emphasize differences in associative acquisition.
doi:10.1037/0097-7403.26.1.74 fatcat:4c6o5bpitvbcfhopj57276bxae