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'. A bed, blankets, pillows, and pyjamas are all traditionally associated with sleep Sleep is the regular state of natural rest observed in all mammals, birds, and fish. ... Sleep debt is the cumulative effect of not getting enough sleep. ... Sleep deprivation is an overall lack of the necessary amount of sleep. ... Fatigue may refer to: Fatigue (physical) - tiredness in humans Fatigue (material) - failure by repeated stress in materials Fatigues (uniform) - military uniform (BDU or ACU) Chronic Fatigue Syndrome - a medical condition Battle fatigue - also known as Post-traumatic stress disorder Readers fatigue - a side-effect of parsing poorly formatted textual...
There is little agreement on how best to identify microsleep episodes. Some experts [citation needed] define microsleep according to behavioral criteria (head nods, drooping eyelids, etc.), while others [citation needed] rely on EEG markers, which are known [citation needed] to be weakly correlated with the behavioral features of sleep. Electroencephalography is the neurophysiologic measurement of the electrical activity of the brain by recording from electrodes placed on the scalp or, in special cases, on the cortex. ...
The Waterfall train disaster occurred on January 31, 2003 near Waterfall, New South Wales, Australia, when a train derailment led to the death of six passengers and the train driver. ... Narcolepsy is a neurological condition characterized by severe fatigue, irresistible episodes of sleep and general sleep disorder. ...
References
Ogilvie RD. The process of falling asleep. Sleep Med Rev 5: 247-270, 2001 (PMID 12530990).
A microsleep is a period of sleep lasting no more than a few seconds up to a minute.
Microsleep becomes extremely dangerous when it occurs during situations when continual alertness is demanded, such as driving a motor vehicle.
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.
Microsleeps are brief, unintended episodes of loss of attention associated with events such as blank stare, head snapping, and prolonged eye closure which may occur when a person is fatigued but trying to stay awake to perform a monotonous task like driving a car or watching a computer screen.
Microsleep episodes last from a few seconds to several minutes, and often the person is not aware that a microsleep has occurred.
During a microsleep, a pilot might not be aware of flashing alarm lights in the cockpit.
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