sleep
Sign in to saveSleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited. During sleep, there is a marked decrease in muscle activity and interactions with the surrounding environment. While sleep differs from wakefulness in terms of the ability to react to stimuli, it still involves active brain patterns, making it more reactive than a coma or disorders of consciousness.
AI overview
Sleep is a state in which your mind and body reduce their activity, your awareness changes, and you become less responsive to your surroundings, though your brain remains actively engaged. This regular period of reduced activity is distinct from wakefulness because of your decreased ability to react to stimuli, yet it involves more active brain function than a coma.
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Key facts
- Body process.name
- Sleep
- Body process.image
- Domenico Fetti - Sleeping Girl - WGA7863.jpg
- Body process.caption
- Sleeping Girl, Domenico Fetti,
- Body process.biological system
- Nervous system
via Wikipedia infobox
Article
37 sectionsContents
- Physiology
- Brain waves in sleep
- Non-REM and REM sleep
- Awakening
- Timing
- Circadian clock
- Process S
- Social timing
- Distribution
- Naps
- Genetics
- Genes for short sleep duration
- Quality
- Ideal duration
- Children
- Recommended duration
- Functions
- Restoration
- Memory processing
- Dreaming
- Disorders
- Insomnia
- Sleep health
- Sleep duration and quality
- Sleep hygiene
- Sleep and musculoskeletal health
- Drugs and diet
- Diet
- In culture
- Anthropology
- In mythology and literature
- In studies on consciousness and philosophy
- In art
- See also
- References
- Further reading
- External links
Sleep is a state of reduced mental and physical activity in which consciousness is altered and certain sensory activity is inhibited. During sleep, there is a marked decrease in muscle activity and interactions with the surrounding environment. While sleep differs from wakefulness in terms of the ability to react to stimuli, it still involves active brain patterns, making it more reactive than a coma or disorders of consciousness.
Sleep occurs in repeating periods, during which the body alternates between two distinct modes: rapid eye movement sleep (REM) and non-REM sleep. Although REM stands for "rapid eye movement", this mode of sleep has many other aspects, including virtual paralysis of the body. Dreams are a succession of images, ideas, emotions, and sensations that usually occur involuntarily in the mind during certain stages of sleep.