Conditioning of food aversions by injections of psychoactive drugs.

Injected male Sprague-Dawley rats with various drugs or saline immediately after drinking milk for the 1st time. 1 wk. later Ss were again given access to the milk. Conditioned aversion to the milk was produced by moderate doses of scopolamine, scopolamine methyl nitrate, amphetamine, lorazepam, and chlorpromazine. Conditioned aversion was not obtained if scopolamine was injected 30 min. prior to milk drinking or more than 4 hr. afterward. (22 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved)