Groups And Grumps: Study Identifies 'Sociality' Neurons

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A University of California, San Diego study has for the first time identified brain cells that influence whether birds of a feather will, or will not, flock together. The research demonstrates that vasotocin neurons in the medial extended amygdala -- which are present in most animals, including humans -- respond differently to social cues in birds that live in colonies compared to their more solitary cousins.