Fig. 1From: Prolonged morphine exposure during adolescence alters the responses of lateral paragigantocellularis neurons to naloxone in adult morphine dependent ratsSchematic timeline indicating the sequence of experimental protocols used in this study. A As shown, animals receive morphine first during adolescence and then during adulthood. The periods of drug exposure are separated by a drug-free interval. PND post-natal day. B Sample of in vivo extracellular recording from LPGi regionBack to article page