Nitrous oxide generalizes to a discriminative stimulus produced by ethylketocyclazocine but not morphine.
European Journal of Pharmacology October 1, 1984 M D Hynes, D L Hymson
The discriminative stimulus properties of nitrous oxide, an analgesic and anesthetic gas, were evaluated in rats trained to discriminate the effects of morphine or ethylketocyclazocine. Administration of nitrous oxide in concentrations as high as 80 percent did not produce generalization to the discriminative cue produced by morphine. Nitrous oxide did, however, generalize in a...