Psychiatric drugs haven't improved for decades. So researchers are scouring the brain for leads
Human anatomy illustration, central nervous system with a visible brain (Shutterstock)

Katie first spoke with a demon when she was 14. He perched on the edge of her bed, and would persistently urge her to do bad things - like blow up her Arkansas high school. She spoke to God, too. Her parents, Pentecostal Christians, believed her visions made her special. So she received no therapy, and…

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