Non-rapid Eye Movement Sleep
Non-rapid eye movement, or NREM, is, collectively, sleep stages 1–3, previously known as stages 1–4. Rapid eye movement sleep (REM) is not included. There are distinct electroencephalographic and other characteristics seen in each stage. Unlike REM sleep, there is usually little or no eye movement during this stage. Dreaming is rare during NREM sleep, and muscles are not paralyzed as in REM sleep. People who do not go through the sleeping stages properly get stuck in NREM sleep and because muscles are not paralyzed, a person may be able to sleepwalk. In addition, there is a parasympathetic dominance during NREM. During the period of Non-REM sleep, the mindset of a person is more organized. It has been found, through several experiments that low levels of stage 4 sleep are found in about 40-50% of acute and chronic schizophrenics who typically portray abnormal non-rapid eye movement sleep.
Read more about Non-rapid Eye Movement Sleep: Stages of NREM Sleep, Dreaming During NREM, Polysomnography, Slow-wave Sleep
Famous quotes containing the words eye, movement and/or sleep:
“The hero is a feeling, a man seen
As if the eye was an emotion,
As if in seeing we saw our feeling
In the object seen and saved that mystic
Against the sight, the penetrating,
Pure eye.”
—Wallace Stevens (1879–1955)
“Women, because of their colonial relationship to men, have to fight for their own independence. This fight for our own independence will lead to the growth and development of the revolutionary movement in this country. Only the independent woman can be truly effective in the larger revolutionary struggle.”
—Women’s Liberation Workshop, Students for a Democratic Society, Radical political/social activist organization. “Liberation of Women,” in New Left Notes (July 10, 1967)
“Error is to truth as sleep is to waking. I have observed that one turns, as if refreshed, from error back to truth.”
—Johann Wolfgang Von Goethe (1749–1832)