When people work together, they're literally on the same wavelength, brain waves show

Los Angeles Times 

Psychology researchers at New York University equipped each of 12 high school seniors with a portable, low-cost electroencephalogram and gathered the gadgets' brain-wave readings over a semester's worth of biology classes (11 sessions lasting 50 minutes each). Writing in the journal Current Biology, the researchers reported that when students were most engaged with each other and in group learning, the readings on their electroencephalograms, or EEGs, tended to show brain-wave patterns that rose and dipped in synchrony. Such shared entrainment shows up on EEGs as neural synchrony. "Brain-to-brain synchrony is a possible neural marker for dynamic social interactions, likely driven by shared attention mechanisms," the group wrote.