title: A characteristic effect of hallucinogens on investigatory responding in rats.
abstract: The disruption of the temporal distribution of investigatory responses by rats in a novel hole-board following lysergic acid diethylamide-25 (LSD), as described in a companion paper (Geyer and Light, 1979), was found to be a characteristic effect of a variety of hallucinogens. Similar effects were produced by indoleamine hallucinogens, such as LSD, N,N-dimethyltryptamine, and psilocin, and by phenylethylamine hallucinogens, such as mescaline or 2,5-dimethoxy-4-methylamphetamine (DOM). Congeners of DOM that are inactive in humans had no significant effects. Furthermore, of a variety of other psychoactive drugs tested, only apomorphine produced an effect similar to that of the hallucinogens. These results suggest that a simple behavioral measure of exploration in a hole-board may provide a useful animal model with which to examine the common effects of hallucinogens.
mesh_terms: D004290:DOM 2,5-Dimethoxy-4-Methylamphetamine / Q000494:pharmacology; D000662:Amphetamines / Q000494:pharmacology; D000818:Animals; D001058:Apomorphine / Q000494:pharmacology; D005106:Exploratory Behavior / Q000187:drug effects*; D006213:Hallucinogens / Q000494:pharmacology*; D008238:Lysergic Acid Diethylamide / Q000494:pharmacology; D008297:Male; D010627:Phenethylamines / Q000494:pharmacology; D051381:Rats; D013997:Time Factors
chemical_list: D000662:Amphetamines; D006213:Hallucinogens; D010627:Phenethylamines; D004290:DOM 2,5-Dimethoxy-4-Methylamphetamine; D008238:Lysergic Acid Diethylamide; D001058:Apomorphine