Abstract
This experiment was done to test the prediction that preexposure to a drug state would increase the discriminability of that drug state when used as a cue in a discrimination task. Eight rats were pre-exposed to scopolamine for 20 days and 8 rats were given saline injections. The drug pre-exposed animals acquired a drug state discrimination more quickly than the controls. A difference was also found between the generalization gradients for each group with the pre-exposed group showing a steeper generalization gradient.
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