Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. A chronic sleep-restricted state can cause fatigue, daytime sleepiness, clumsiness and weight loss or weight gain. It adversely affects the brain and cognitive function. Few studies have compared the effects of acute total sleep deprivation and chronic partial sleep restriction. Complete absence of sleep over long periods is impossible for humans to achieve (unless they suffer from fatal familial insomnia); brief microsleeps cannot be avoided. Long-term total sleep deprivation has caused death in lab animals.
Other articles related to "sleep, sleep deprivation":
... is a noted pioneer in the field of sleep research whose work includes some of the first laboratory studies of insomnia, narcolepsy, sleep apnea, and napping ... He has done research in the effects on sleep of exercise, mental work, stimulation, stress, and metabolism, as well as the effects of sleep deprivation ... He also looked at sleep in reptiles and rats ...
... and Sesame Street, was being used to cause sleep deprivation and culturally offend the prisoners. 3, 1990." United States According to the FBI "W observed sleep deprivation interviews w/strobe lights and loud music ... Methods often reported include prolonged sleep deprivation beatings prolonged restraint in painful positions, sometimes combined with exposure to loud music ...
... Sleep deprivation has been found to provide short term relief of depressive symptoms in some patients ... Partial sleep deprivation in the second half of the night may be as effective as an all night sleep deprivation session ...
... Effects of sleep deprivation on cognitive performance Narcolepsy Polyphasic sleep Sleep debt Sleep medicine Sleep onset latency Wake therapy Tony Wright claims to hold world record for sleep ...
... For example, rapid eye movement (REM) sleep—the stage in which dreaming occurs—may be quick to arrive and intense in depressed people ... REM sleep depends on decreased serotonin levels in the brain stem, and is impaired by compounds, such as antidepressants, that increase serotonergic tone in brain stem structures ... Overall, the serotonergic system is least active during sleep and most active during wakefulness ...
Famous quotes containing the words deprivation and/or sleep:
“All beauty, resonance, integrity,
Exist by deprivation or logic
Of strange position.”
—John Ashbery (b. 1927)
“Now I lay me down to sleep,
I pray the Lord my soul to keep;
If I should die before I wake,
I pray the Lord my soul to take.”
—Unknown. Now I Lay Me Down to Take My Sleep (l. 14)