MedicalXpress -- If you’ve ever lost your keys or stuck the milk in the cupboard and the cereal in the refrigerator, you may have been the victim of a tired brain region that was taking a quick nap. Researchers at the University of Wisconsin-Madison have a new explanation. They’ve found that some nerve cells in a sleep-deprived yet awake brain can briefly go “off line,” into a sleep-like state, while the rest of the brain appears awake.
