Opioid blockade and social comfort in chicks

@article{Panksepp1980OpioidBA,
  title={Opioid blockade and social comfort in chicks},
  author={Jaak Panksepp and Noel Jay Bean and Phillip M. Bishop and Thomas R. Vilberg and Tony L. Sahley},
  journal={Pharmacology Biochemistry and Behavior},
  year={1980},
  volume={13},
  pages={673-683}
}
When young animals are separated from their normal social environment in groups they distress vocalize (DV) less than when isolated alone. Opioid blockade with naloxone (1 mg/kg peripherally, and 1 microgram centrally) increased crying more in group tested chicks than individually tested ones. The serotonin receptor blocking agent methysergide and the cholinergic blocking agent atropine sulfate produced similar effects. The testing of birds in mirrored environments also produced a reduction of… CONTINUE READING
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