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1 .This is Scientific American 60-Second Mind, I'm Christie Nicholson. Got a minute?
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2 .Want to remember something? Sleep on it.
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3 .A recent study finds that the more we value a piece of information the more likely we'll review it during our sleep.
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4 .And because we do that, we'll tend to remember it.
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5 .Participants were shown objects with different corresponding dollar amounts on a computer screen.
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6 .If participants could remember that object later on a test,
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7 .they were rewarded with the associated dollar amount.
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8 .Objects were also accompanied by an associated sound, for instance a cat was accompanied by a "meow."
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9 .After either a 90-minute nap or wake period subjects' memory for low-value objects was worse than for high-value objects.
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10 .But in a second experiment associated sounds were played either when the subjects were awake or asleep,
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11 .as a way to trigger the memory of the object.
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12 .Researchers found that low-value objects were better remembered when the associated sound was played during subjects' sleep as opposed to when they were awake.
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13 .The authors believe that during sleep is when we tend to go over the day's new information,
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14 .so that is why they could manipulate the memory storage of lower-value objects during sleep time rather than wake time.
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15 .Gives new meaning to the term sound asleep.
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16 .Thanks for the minute, for Scientific American 60-Second Mind. I'm Christie Nicholson.
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