Every night, the sleeping brain engages in a process that scientists are only beginning to understand.Every night, the sleeping brain engages in a process that scientists are only beginning to understand. This book examines what happens during sleep and why dreaming occurs, drawing on research from neuroscience, psychology, and sleep medicine. This book was generated by an artificial intelligence system, using reliable sources to compile clear and accessible information. You will learn how sleep cycles are structured, what distinguishes REM sleep from other phases, and which theories attempt to explain the function of dreams. The book also addresses how memory, emotion, and problem solving relate to nightly brain activity, and what current research says about disorders such as insomnia and nightmares. This introduction offers you a factual overview of a subject that touches nearly a third of human life, without unnecessary speculation.Every night, the sleeping brain engages in a process that scientists are only beginning to understand. This book examines what happens during sleep and why dreaming occurs, drawing on research from neuroscience, psychology, and sleep medicine. This book was generated by an artificial intelligence system, using reliable sources to compile clear and accessible information. You will learn how sleep cycles are structured, what distinguishes REM sleep from other phases, and which theories attempt to explain the function of dreams. The book also addresses how memory, emotion, and problem solving relate to nightly brain activity, and what current research says about disorders such as insomnia and nightmares. This introduction offers you a factual overview of a subject that touches nearly a third of human life, without unnecessary speculation.