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Glennon RA, Rosecrans JA, Young R, Gaines J. 
“Hallucinogens As A Discriminative Stimuli: Generalizations Of Dom To A 5-methoxy-N, N-dimethyltryptamine Stimulus”. 
Life Sci.. 1979;24:993-997.
Hallucinogens (psychotomimetic agents) are capable of producing various discriminative stimuli for animals. Serotonergic involvement has been implicated as playing a role in the behavioral effects elicited by, for example, mescaline and DOM. Because certain tryptamine analogs possess high serotonin (5-HT) receptor binding affinities, it was of interest to examine one of the more potent agents. Employing a standard operant test chamber, six rats were trained to respond under a variable-interval 15-second schedule of-sweetened-milk reinforcement. 5-Methoxy-N,N-dimethyltryptamine (5-OMe DMT), which possesses a 5-HT receptor affinity much higher than that of mescaline, but nearly equivalent to that of DOM, was found to serve as a discriminative stimulus. Furthermore, the 5-OMe DMT stimulus could be attenuated by the 5-HT antagonist BC-105. The 5-OMe DMT stimulus generalized with DOM suggesting that these two hallucinogens produce qualitatively similar interoceptive cues in rats.
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