The contents of a person’s dream have been revealed by brain scan for the first time, scientists report in the Nov. 8 Current Biology. By monitoring the brain of a man who has unusual control over his dreaming, the accomplishment brings researchers closer to understanding how the brain spins its nightly yarns.

“It’s really exciting that people have done this,” says sleep researcher Edward Pace-Schott at Massachusetts General Hospital in Charlestown and the University of Massachusetts, Amherst. “And it also brings back lucid dreaming as a very powerful scientific tool.”

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