User:Cancername/WIP/Sleep basics
Activity and alertness is reduced during sleep. While sleep affects the entire body, it most strongly affects the nervous system. Many important bodily functions, like waste cleanup and memory processing are supported by sleep.
[PSG section about how to measure brain, eye, muscle activity here]
Sleep stages
There are two kinds of sleep stage: rapid eye movement (REM) sleep and non-REM sleep. Non-REM Sleep has stages, which start at light sleep and progressively get deeper.
NREM1
Non-REM sleep stage 1, also called light sleep, is the lightest stage of sleep and comprises around 5% of total sleep time. It generally lasts around 1-5 minutes. In light sleep, the sleeper may be aware, and believe themselves not to be awake. [source] [PSG characteristics] [notable events and happenings] [significance?] [vital?]
Sleep cycles
These stages are arranged in repeating cycles, typically lasting around 90 minutes [variance?]. [what order of sleep stages?] [differences between consecutive sleep stages]
Effect of sleep
[functions of sleep] [effects on particular conditions]
References
- Patel, Aakash K.; Reddy, Vamsi; Shumway, Karlie R.; Araujo, John F. (2025). "Physiology, Sleep Stages". StatPearls. Treasure Island (FL): StatPearls Publishing. PMID 30252388. Retrieved 2025-06-08.
