While you sleep, your inner wordsmith keeps vigil

September 12, 2014 6:26 PM

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A pair of experiments show that humans can classify words in their sleep, suggesting that the brain remains in some sense aware of its environment even after its owner has nodded off.

Quite a bit, it turns out. Scientists had long believed that the sleeping mind shuts out all but the most intrusive stimuli, such as alarm clocks and wailing infants. But new research indicates that the brain actually welcomes some sounds inside, where they are identified and categorized, all withou...

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