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1 .This is Scientific American 60-Second Mind, I'm Christie Nicholson.Got a minute?
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2 .In his play Macbeth, Shakespeare wrote that sleep “...knits up the raveled sleep of care."
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3 .So why would anyone want to be purposely reminded of a fearful memory while sleeping?
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4 .Strange as it may seem, recent research shows that reminders of a scary memory while snoozing may help treat phobias.
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5 .Scientists showed volunteers two faces while the volunteers received mild electric shocks.
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6 .As they viewed a face, the subjects also smelled a specific odor, like clove, mint or lemon.
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7 .So both the face and the odor were associated with the unpleasant experience of being shocked.
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8 .Later, when subjects were in deep sleep they were exposed to one of the odors.
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9 .When they woke up, they viewed images of the two faces.
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10 .And their fear reaction to the face associated with the smell was lower than when they saw the other face.
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11 .Fear was quantified via brain scans and sweat measurement.
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12 .The study is the journal Nature Neuroscience.
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13 .It's known that people can overcome phobias by exposure to the feared object or behavior while awake.
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14 .But this study marks the first time scientists have tried exposure albeit through a conditioned response during sleep to reduce fear.
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15 .And for phobic people, it could be a dream come true.
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16 .Thanks for the minute, for Scientific American 60-Second Mind. I'm Christie Nicholson.
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