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In brief : Scary monsters

点击量:   时间:2017-08-03 02:02:06

THE part of the brain that makes hallucinations seem real may have been pinpointed by researchers in Canada. A team led by Henry Szechtman of McMaster University in Hamilton hypnotised 14 male volunteers. They knew some were prone to hallucination, others not. Szechtman scanned their brains while they performed three tasks: listening as a taped message was played, imagining it being played, and listening as though it was being played (even though it wasn’t). In the last task, the hallucinators reported hearing the message. This was the only task that activated a spot in their brains’ anterior cingulate. Szechtman suspects this region allocates an “external” tag to internal thoughts, making them seem real (Proceedings of the National Academy of Sciences, vol 95,