1/1/2023 0 Comments Deep sleep unable to wake up![]() ![]() Sleep inertia is a normal phenomenon, but one with potentially dangerous ramifications, e.g., in health care workers or military personnel who are woken abruptly in the night and required to make cognitively-taxing decisions. The intensity and duration of sleep inertia vary based on situational factors, but its effects may last minutes to several hours. ![]() “Sleep inertia” refers to the transitional state between sleep and wake, marked by impaired performance, reduced vigilance, and a desire to return to sleep. This may represent an important treatment target, but evidence-based treatment guidance is not yet available. Difficulty with awakening is also commonly endorsed by individuals with mood disorders, disproportionately to the general population. Optimal treatment of sleep drunkenness is unknown, although several medications have been used with benefit in small case series. In patients with hypersomnolence disorders, especially but not exclusively idiopathic hypersomnia, a more pronounced period of confusion and sleepiness upon awakening, known as “sleep drunkenness”, is common and problematic. Recovery sleep after sleep deprivation also amplifies sleep inertia, although the effects of deep sleep vary based on task and timing. Forced desynchrony studies have demonstrated that sleep inertia impacts cognition differently than do homeostatic and circadian drives and that sleep inertia is most intense during awakenings from the biological night. Although the precise substrate of sleep inertia is unknown, electroencephalographic, evoked potential, and neuroimaging studies suggest the persistence of some features of sleep beyond the point of awakening. The transition from sleep to wake is marked by sleep inertia, a distinct state that is measurably different from wakefulness and manifests as performance impairments and sleepiness. ![]()
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