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Amicrosleep is an unintended loss of attention which occur when a person is performing monotonous tasks .[1] Often, it is the result of sleep deprivation, mental fatigue, depression, sleep apnea, hypoxia, narcolepsy, or hypersomnia. Microsleeping can occur at any time, typically without significant warning.
Microsleeps can last anywhere from a few seconds to several minutes and can become extremely dangerous when occurring during situations which demand constant alertness, such as driving a motor vehicle or working with heavy machinery. People who experience microsleeps are usually unaware that one had occurred. Many accidents and catastrophes have resulted from microsleep episodes in these circumstances.[2] For example, a microsleep episode is claimed to have been one factor contributing to the Waterfall train disaster in 2003; the driver had a heart attack and the guard who should have reacted to the train's increasing speed is said by his defender to have microslept, thus causing him to be held unaccountable.
Everyone can experience microsleeps but the people who experience these sleeps the most are people with sleep disorders.They can occur at any time of day but most commonly during pre-dawn hours and mid-afternoon hours. The main causes of microsleeps are
There is little agreement on how best to identify microsleep episodes. Some experts define microsleep according to behavioral criteria
Other experts rely on EEG markers. One study at the University of Iowa defined EEG-monitored microsleeps in driving simulation as "a 3–14 second episode during which 4–7 Hz (theta) activity replaced the waking 8–13 Hz (alpha) background rhythm."[3]
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Sleep and sleep disorders
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| Stages of sleep cycles |
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| Brain waves |
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| Sleep disorders |
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| Daily life |
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