What Does The Sleeping Brain Think About?

What does the sleeping brain think about?

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Synopsis

Researchers at the University of Geneva found that the human brain processes complex information during sleep, replaying recent experiences to consolidate memories, as demonstrated by a study where participants learned to detect patterns in noise; using MRI scans and advanced analysis, the team observed that brain regions involved in learning while awake—like the hippocampus and sensory areas—reactivate during sleep, with the strength of this replay linked to improved performance the next day, revealing sleep’s active role in memory reinforcement.