Template:BioPy Antianalgesia is the ability of some endogenous chemicals (notably cholecystokinin and neuropeptide Y) to counter the effects of exogenous analgesics (such as morphine) or endogenous pain inhibiting neurotransmitters/modulators, such as the endogenous opioids. A learned form can be established using methods similar to the learning principle of conditioned inhibition, and has been demonstrated in rats.
- ↑ Wiertelak, EP, Maier, SF and Watkins, LR (8 May 1992). Cholecystokinin antianalgesia: safety cues abolish morphine analgesia. Science 256 (5058): 830–833.