Cannabinoid receptor-1 signaling contributions to sign-tracking and conditioned reinforcement in rats. - Bacharach, Sam Z.; Nasser, Helen M.; Zlebnik, Natalie E.; Dantrassy, Hannah M.; Kochli, Daniel E.; Gyawali, Utsav; Cheer, Joseph F.; Calu, Donna J. (Psychopharmacology, 2018)