The effect of the CS-UCS interval and extinction on place conditioning and analgesic tolerance with morphine
Hinson R, McKee S, Lovenjak T, Wall A. The effect of the CS-UCS interval and extinction on place conditioning and analgesic tolerance with morphine. Journal Of Psychopharmacology 1993, 7: 164-172. PMID: 22290663, DOI: 10.1177/026988119300700204.Peer-Reviewed Original ResearchPlace preferencePlace conditioning trainingAnalgesic effectAnalgesic toleranceMorphine injectionPlace conditioningHot plate testOnly salineSaline injectionConditioning trainingMorphinePlace conditioning apparatusInterval studyHome cageExtinction trialsSeparate groupsInjectionCS-UCS intervalEnd compartments