Good communication is a matter of getting "in sync" with others, as you've probably noticed when you've seen people match their steps perfectly as they walk, and imitate each other's gestures as they talk, and use each other's phrases and grammar. Last week, this paper reported this kind of coordination in the most important place of all: When people converse, it reports, regions of their brains synchronize their activity. "Neural coupling," they argue, is a key part of communication.
