Blockade of conditioned taste aversion by scopolamine and N-methyl scopolamine: associative conditioning, not amnesia.
The anticholinergic, scopolamine, consistently disrupts one-trial passive avoidance conditioning but the effects of such drugs on one-trial conditioned taste aversion (CTA) are variable and contradictory. In the present study, treatment of rats with scopolamine impaired the suppression of sucrose intake by post-ingestion administration of lithium chloride (LiCl) in a two-bottle choice test. A similar effect was obtained by using N-methyl scopolamine which penetrates the brain only to a limite...Expand abstract
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