DOM-stimulus generalization to LSD and other hallucinogenic indolealkylamines

Stimulus generalization studies were conducted using rats trained to discriminate 1.0 mg/kg of the phenalkylamine hallucinogen 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM) from saline in a two-lever operant procedure. The results suggest that certain indolealkylamine hallucinogens, including LSD and several alpha-methyltryptamine, N,N-dialkyltryptamine and beta-carboline derivatives, are capable of producing stimulus effects similar to those produced by DOM. Furthermore, for twelve agents where human data are available, a significant correlation exists between discrimination-derived ED50 values and hallucinogenic potency.