Transfer across unconditioned stimuli in serial feature discrimination training.

摘要: The transfer of conditioned modulation across stimuli (CS) and unconditioned (US) was examined in 3 experiments that used Pavlovian appetitive training procedures with rats. In Experiment 1, after a positive patterning discrimination (X3A! /X" /A" ), X increased responding elicited by another trained-then-extinguished CS as long had been trained the same US training. 2, feature-negative (X3A" /A! inhibited US. Experiments 1 2 between-groups design, whereas more powerful within-groups design. 3, rats were feature-positive ). tests, then extinguished from This increase greater than different results supported suggestion features serial tasks influence behavior indirectly transiently raising or lowering threshold for activation representations its target any other may be associated Other interpretations findings also considered. (FP) discrimination, food (! ) is delivered on trials when onset feature stimulus (X) precedes cue (A), no target, A, presented alone. Animals demonstrate they solve FP discriminations exhibiting stronger X3A! A" trials. featurenegative (FN) discriminations, alone, occurs shortly before (A) onset. Evidence learning FN provided to extent less X3A"