To read a man’s mind, first you have to outline his skull.
Last November, I watched a psychologist use a digital pen to draw the circumference of a man’s head. The coordinates of his brain were quickly mapped, pinpointing the precise areas within his skull that process emotions. Behind him, a massive magnetic mind-reader—a neuroimaging device called a magnetoencephalography, or MEG—emerged from the wall, funneling into an oversized white helmet. It took two scientists to slowly maneuver the apparatus into position around his head.
As the man lay still, staring blankly up at a screen, researchers crossed wires over his body and taped sensors to his temples. Yoav (a pseudonym, as he asked to remain anonymous), a 28-year-old political science student at Bar Ilan University in Israel, was paid 110 shekels (around $30) for his time, and didn’t know he was about to become part of an experiment attempting to change his mind about the Israeli-Palestinian conflict.
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