Rostral and Caudal Ventral Tegmental Area GABAergic Inputs to Different Dorsal Raphe Neurons Participate in Opioid Dependence

？ Rostral and caudal VTA GABAergic neurons target different DRN neurons ？ Rostral and caudal VTA→DRN pathways function oppositely in reward ？ The rostral VTA→DRN pathway is depressed by repeated usage of morphine ？ Chronically activating the rVTA→DRN inhibitory pathway disrupts morphine rewar