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I feel like the interesting part of the synchrony is that the mice will cooperate with the other mice that they are in sync with. How does that happen?

> "the rodents groomed and sniffed companions with whom their neurons were in sync more often than ones with whom they were out of sync"

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If some sets of the rodents is not as the same frequency as the another set then it's likely that only one of the frequencies of stimulation of the reward pathway were optimal for recruiting the relevant population of neurons for reward expression. They'd feel all nice and not afraid of each other, with an increased incentive salience (including social stimuli). Whereas the group not being stimulated at the optimal frequency for recruitment wouldn't feel nice and be motivated to persue stimuli.

Seems plausible

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