Evidence for endogenous opioid release in the amygdala during positive emotion

@article{Koepp2009EvidenceFE,
  title={Evidence for endogenous opioid release in the amygdala during positive emotion},
  author={Matthias J. Koepp and Alexander Hammers and A. D. Lawrence and Marie-Claude Asselin and Paul M. Grasby and C. J. Bench},
  journal={NeuroImage},
  year={2009},
  volume={44 1},
  pages={252-6}
}
Endogenous opioid release has been linked to relief from aversive emotional memories, thereby promoting a euphoric state and subsequent interactions towards social stimuli resulting in the formation of social preferences. However, this theory remains controversial. Using positron emission tomography and [(11)C]diprenorphine (DPN) in healthy volunteers, we found significantly reduced DPN binding to opioid receptor in the hippocampus during positive mood induction compared to neutral mood… CONTINUE READING
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