A NEURAL circuit has been identified that allows people to predict whether someone is going to lie to them. The finding could help to explain why some people become paranoid.
[Subjects’ brains were imaged while they played a game.] When the volunteers suspected they were being lied to, activity levels rose in the dorsomedial prefrontal cortex (DPFC), an area near the front of the brain. If the volunteer thought the player was telling the truth the activity remained low.
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