The secret world of dreams could soon be cracked open. Brain scanners are already being used to figure out waking thoughts, and now it seems that similar methods can tap into dreams.To bridge the worlds of sleep and waking, Michael Czisch and Martin Dresler at the Max Planck Institute of Psychiatry in Munich, Germany, and their colleagues turned an array of brain-watching technology on lucid dreamers."A lucid dream is simply a dream in which you realise you're dreaming," says Dresler. Lucid dreamers' rare ability to "wake up" while remaining in a dream and control their actions - and the dream - makes them an important asset to dream researchers.
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