Dr. Winsauer will present data from monkeys administered cannabinoids to demonstrate that the disruptions in learning and antinociception are mediated by the cannabinoid type-1 receptors (CB1R), and to discuss potency ratios calculated for cannabinoids across the assays employed. These data from monkeys will provide attendees with a direct comparison of cannabinoid doses that produce therapeutic (i.e., antinociception) and adverse (i.e., disruptions in learning and/or memory) effects in the same species, findings that provide insight into the potential therapeutic index for these drugs .