Contextual control of inhibition with reinforcement: adaptation and timing mechanisms.

摘要: Four experiments with rats studied the effects of switching context after Pavlovian conditioning. In three conditioned suppression experiments, a large number conditioning trials created “inhibition reinforcement” (IWR), in which fear conditional stimulus (CS) reached maximum and then declined despite continued CS – unconditional pairings. When IWR occurred, switch augmented CS; augmentation were highly correlated. Neither nor resulted from inhibition delay (IOD): suppression, occurred without IOD (Experiment 3), appetitive 4), or augmentation. may occur because animal adapts to context-specific manner. We discuss several implications.