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Sleep inertiaSleep inertia is a physiological state characterised by a decline in motor dexterity and a subjective feeling of grogginess, immediately following an abrupt awakening from deep sleep. Sleep inertia can also refer to the tendency of a person to want to return to sleeping, even after suitable rest has been achieved. Typically, sleep inertia lasts between 1 to 3 hours for a night wake up and 45 to 90 minutes for a day wake up. If the subject is awakened due to a perceived danger, however, the duration of sleep inertia is reduced to only a few seconds. Additional recommended knowledgeFactorsNASA studies have shown that a variety of factors influence the severity and duration of sleep inertia. These include:
CauseThe cause of sleep inertia is not clear. One theory is that it is caused by the build-up of adenosine in the brain during non-REM sleep. Adenosine then binds to receptors, which produce the feelings of tiredness. See alsoCategories: Sleep physiology | Circadian rhythms |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sleep_inertia". A list of authors is available in Wikipedia. |