Effect of amount of context extinction on revaluation of a target CS.
In two experiments using rats in a conditioned lick suppression paradigm the effects of posttraining extinction of the conditioning context on responding to the target conditioned stimulus (CS) which had previously been paired with a footshock was examined in a neutral context. Experiment 1 replicated Marlin's [Learn. Motiv. 13 (1981) 526] observation that this treatment can reduce responding to the target CS. This finding is contrary to other reports that context extinction enhances responding to the target CS. Experiment 2 examined the amount of posttraining context extinction as a variable potentially controlling this effect. It found the mediated extinction effect following one, but not 10 h of context extinction.
Stout
Steven C
SC
Department of Psychology, State University of New York at Binghamton, Binghamton, NY 13902-6000, USA.
Miller
Ralph
R
D000818:Animals; D001522:Behavior, Animal; D003213:Conditioning, Psychological; D004777:Environment; D005108:Extinction, Psychological; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley