Professor Rebecca Spencer comments on research about the impact of sleep deprivation on learning. “Sleep plays a very active role in memory consolidation,” she says. She describes the hippocampus as a desk where papers get piled up throughout the day. “When you sleep, those ‘papers’ are filed away into a long-term filing cabinet to be retrieved as needed.” That “filing cabinet” is the cerebral cortex. “While memory consolidation can happen while awake, this process is stronger or greatest during sleep.”
National Geographic