State of Sleep

A State of Sleep is a mental state characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity and inhibition of nearly all voluntary muscles.

• Context:
  • It can (typically) be a part of a Sleep Session.
  • It can range from being a REM Sleep to being a Non-REM Sleep.
  • It can be presaged by Sleep Preparation / Sleep Intent.
  • …
• Example(s):
  • a Human State of Sleep.
  • a Dog State of Sleep.
  • a Bird State of Sleep.
  • …
• Counter-Example(s):
  • a Wakeful State.
  • a Meditation State.
  • a Coma State.
  • a Dead State.
• See: Deep Wave Sleep, Locked-In Syndrome, Sleep Walking, Narcolepsy, Insomnia, Consciousness, Voluntary Muscle, Rapid Eye Movement Sleep, Wakefulness, Coma, Disorders of Consciousness, Sleep Cycle, Dream.

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References

2020

• (Wikipedia, 2020) ⇒ https://en.wikipedia.org/wiki/sleep Retrieved:2020-4-8.
  • Sleep is a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep, and reduced interactions with surroundings. It is distinguished from wakefulness by a decreased ability to react to stimuli, but more reactive than a coma or disorders of consciousness, with sleep displaying very different and active brain patterns. Sleep occurs in repeating periods, in which the body alternates between two distinct modes: REM sleep 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. A well-known feature of sleep is the dream, an experience typically recounted in narrative form, which resembles waking life while in progress, but which usually can later be distinguished as fantasy. During sleep, most of the body's systems are in an anabolic state, helping to restore the immune, nervous, skeletal, and muscular systems; these are vital processes that maintain mood, memory, and cognitive function, and play a large role in the function of the endocrine and immune systems. The internal circadian clock promotes sleep daily at night. The diverse purposes and mechanisms of sleep are the subject of substantial ongoing research. Sleep is a highly conserved behavior across animal evolution. Humans may suffer from various sleep disorders, including dyssomnias such as insomnia, hypersomnia, narcolepsy, and sleep apnea; parasomnias such as sleepwalking and Rapid eye movement sleep behavior disorder; bruxism; and circadian rhythm sleep disorders. The advent of artificial light has substantially altered sleep timing in industrialized countries.

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