Thinking high: a metaphor from the past, in the present and, perhaps, for the future.
D003243:Consciousness / Q000187:drug effects*; D004723:Endorphins / Q000502:physiology; D006556:Heroin Dependence / Q000523:psychology; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D011619:Psychotropic Drugs / Q000009:adverse effects* / Q000494:pharmacology; D011956:Receptors, Cell Surface / Q000378:metabolism; D011963:Receptors, GABA-A; D019966:Substance-Related Disorders / Q000209:etiology / Q000517:prevention & control / Q000523:psychology*
D004723:Endorphins; D011619:Psychotropic Drugs; D011956:Receptors, Cell Surface; D011963:Receptors, GABA-A; D008691:Methadone