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Most people, Dr. Ellenbogen says, think of the sleeping brain as similar to a computer that has “gone to sleep” — it does nothing productive. Wrong. Sleep enhances performance, learning and memory. Most unappreciated of all, sleep improves creative ability to generate aha! moments and to uncover novel connections among seemingly unrelated ideas.
Steven P. Jobs, the chief executive of Apple, once defined creativity as “just connecting things.” Sleep assists the brain in flagging unrelated ideas and memories, forging connections among them that increase the odds that a creative idea or insight will surface.