Professional Development · Health & Wellbeing · Sleep Neurobiology
Sleep Cycles: The 90-Minute Rhythm and How It Changes
4 Abschnitte1 Karteikarten-Decks1 Quizze
How sleep is organized into roughly 90-minute cycles of NREM and REM sleep, why that rhythm exists, and how its composition shifts across a night and across a lifetime.
Inhaltsübersicht
- The Discovery of the 90-Minute Sleep Cycle
- Anatomy of a Single Cycle: From Light Sleep to REM
- How Cycle Composition Changes Across a Single Night
- Individual and Lifespan Variation, and Why It Matters for Waking Up
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- Sleep Architecture: NREM Stages and REM
- Sleep Neurotransmitters: GABA, Adenosine, Serotonin, and Histamine
- REM Sleep: Dreaming, Emotional Processing, and Memory
- Sleep Need: Individual Variation and the 'Short Sleeper' Myth
- Deep Sleep (Slow-Wave Sleep): Physical Restoration and Memory Consolidation
- Sleep Architecture Across the Lifespan: Childhood, Adulthood, and Older Age
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