Effects of marijuana history on the subjective, psychomotor, and reinforcing effects of nitrous oxide in humans.
Drug and Alcohol Dependence December 1, 1994 S Yajnik, P Thapar, J L Lichtor et al.
An experiment using marijuana users and non-users was conducted to assess whether the reinforcing, subjective, or psychomotor effects of nitrous oxide were influenced by a subject's drug history. Subjects in the first four sessions sampled 40% nitrous oxide in oxygen and 100% oxygen (placebo), and then over the next three sessions, chose which agent they wished to inhale. Choice distributions...