Suzanne Dikker, a cognitive neuroscientist at NYU and Utrecht University had previously used EEG devices to scan the brainwaves of the artist Marina Abramović and another subject as they maintained silent eye contact, picking up only fleeting moments of synchronicity.

[T]wo pairs of veteran dancers took to the floor with black, spidery sensor-helmets strapped to their heads.

Because the actual EEG readouts are so confused and jumbled on screen, she opted for a more dynamic display that succinctly characterized the flood of data pouring in: each partner was represented by the cross-section of a head, and the better the dancers’ brains mimicked each other’s patterns, the more the two heads would overlap.

[T]he dancers synchronized least when they were forced to stand still and imagine their movements—even when they had to dance sans music, they did better than when simply hearing the same song and maintaining physical contact.

Via The Daily Dot.