Lowe, G Some effects of a hallucinogenic compound (cyprenorphine hydrochloride; M 285) on the light reinforced behaviour of rats. [electronic resource] - Nature Dec 1969 - 1226 p. digital Publication Type: Journal Article ISSN: 0028-0836 Standard No.: 10.1038/2241226a0 doi Subjects--Topical Terms: AnimalsBehavior, Animal--drug effectsHallucinogens--pharmacologyLightMorphine--antagonists & inhibitorsNarcotic Antagonists--pharmacologyReinforcement, PsychologyVisual Perception