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A microsleep is a period of sleep lasting no more than a few seconds up to a minute. It often occurs as a result of a sleep debt, sleep deprivation, or mental fatigue. Microsleeps (or microsleep episodes) become extremely dangerous when occurring during situations which demand continual alertness, such as driving a motor vehicle or working with a heavy machinery. People who experience microsleeps usually remain unaware of them, instead believing themselves to have been awake the whole time, or feeling a sensation of 'spacing out'.

There is little agreement on how best to identify microsleep episodes. Some experts define microsleep according to behavioral criteria (head nods, drooping eyelids, etc.), while others rely on EEG markers, which are known to be weakly correlated with the behavioral features of sleep.^{[citation needed]}

References

Ogilvie RD. The process of falling asleep. Sleep Med Rev 5: 247-270, 2001 (PMID 12530990).
PMID 14592362
PMID 15320529

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-A '''microsleep''' is a period of [[sleep]] lasting no more than a few seconds up to a minute. It often occurs as a result of a [[sleep debt]], [[sleep deprivation]], or mental [[fatigue]]. Microsleeps (or microsleep episodes) become extremely dangerous when occurring during situations which demand continual alertness, such as driving a [[Automobile|motor vehicle]] or working with a heavy machinery. People who experience microsleeps  usually remain unaware of them, instead believing themselves to have been awake the whole time, or feeling a sensation of 'spacing out'.
+A '''microsleep''' is a period of [[sleep]] lasting no more than a few seconds up to a minute. It often occurs as a result of a [[sleep debt]], [[sleep deprivation]], or mental [[fatigue]]. Microsleeps (or microsleep episodes) become extremely dangerous when occurring during situations which demand continual alertness, such as driving a [[Automobile|motor vehicle]] or working with a heavy machinery. People who experience microsleeps usually remain unaware of them, instead believing themselves to have been awake the whole time, or feeling a sensation of 'spacing out'.
-There is little agreement on how best to identify microsleep episodes.  Some experts {{fact}} define microsleep according to behavioral criteria (head nods, drooping eyelids, etc.), while others {{fact}} rely on [[Electroencephalography|EEG]] markers, which are known {{fact}} to be weakly correlated with the behavioral features of sleep.
+There is little agreement on how best to identify microsleep episodes.  Some experts define microsleep according to behavioral criteria (head nods, drooping eyelids, etc.), while others rely on [[Electroencephalography|EEG]] markers, which are known to be weakly correlated with the behavioral features of sleep.{{fact}}
 ==See also==