One indication of entanglement between two particles is a change in parity or spin in one when the other is changed in order to maintain constancy of the system. Our experiment was designed to discern if this phenomenon occurred at the macroscopic level between the electroencephalographic activities of brains of pairs of people, separated by about 75 m, with various degrees of “entanglement”. About 50% of the variance of the "simultaneous" electroencephalographic power was shared between pairs of brains. Pairs of strangers were positively correlated within alpha and gamma bands within the temporal and frontal lobes. However the power levels within the alpha and theta bands were negatively correlated for pairs of people who had a protracted history of interaction. The latter result might be considered support for the hypothesis of macroscopic entanglement.

entanglement; electroencephalographic activity; human; action at a distance; social affiliation