Mu opioid receptor stimulation in the medial preoptic area or nucleus accumbens facilitates song and reward in flocking European starlings
It has been proposed that social cohesion in gregarious animals is reinforced both by a positive affective state induced by social interactions and by the prevention of a negative state that would be caused Minimalist Cases by social separation.Opioids that bind to mu opioid receptors (MORs) act in numerous brain regions to induce positive and to r