These results were obtained from studies that masked conditioning stimuli.

After pairing, the conditioning stimulus produces a strong withdrawal as well.

Harry Potter awakens children to the poetry in reality with the make-believe of a good, old-fashioned morality tale (without commercial messages or conditioning stimuli).

Certainly, experiments using more orthodox conditioning stimuli (tones, lights and so on) have produced only scanty evidence that the presence of S2 during can influence latent inhibition.

The unconditioned stimulus was replaced by the repeated firing of the sensory neuron, and the conditioning stimulus by squirting serotonin onto the cell.

In these experiments the unconditioned stimulus was a strong shock to the tail, which produces a strong gill and siphon withdrawal response, paired with, as conditioning stimulus, a mild tactile stimulus to the siphon, which normally produces only mild withdrawal.