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Nature 444, 133 (9 November 2006) | doi:10.1038/444133a; Published online 8 November 2006

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Power up your memory bank

Kerri Smith

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A stimulating night's sleep improves recall.

Zapping people's brains with an electric current while they sleep might not sound such a good idea. But by boosting natural brain waves it can improve memory, as new work shows.

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