Tossing, turning, forgetting

Memory requires uninterrupted z’s

By Tina Hesman Saey, 09:15 AM July 25, 2011

Continuity of sleep, not just the total hours of nightly slumber, is crucial to forming and retaining memories, a new study in mice suggests.

Mice couldn’t remember objects they’d seen before after a night of interrupted sleep, Asya Rolls of Stanford and her colleagues report online July 25 in the Proceedings of the National Academy of Sciences. Even though the mice got just as much sleep as normal and slept as intensely as usual, breaking that sleep into one-minute chunks was enough to era...

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