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Narcolepsy is a chronic neurological disorder that impairs the ability to regulate sleep–wake cycles, and specifically impacts REM (rapid eye movement) sleep. [1] The pentad symptoms of narcolepsy include excessive daytime sleepiness (EDS), sleep-related hallucinations, sleep paralysis, disturbed nocturnal sleep (DNS), and cataplexy. [1]
A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
The MSLT measures, by several nap opportunities in one day, how long it takes a person to fall asleep. It also determines whether REM sleep appears upon falling asleep. [2] [4] It is usually performed immediately after an overnight study. This test is the standard to test for narcolepsy and idiopathic hypersomnia.
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
The fourth stage is rapid eye movement (REM) sleep, which is when lucid dreams can occur. ... the idea behind this method is that your heightened awareness of entering sleep will prompt your brain ...
Although alcohol can decrease the amount of time it takes to fall asleep, it will cause a disruption in the sleep cycles. REM sleep is decreased during the first half of the sleep period and stage 1 sleep is increased in the second half of the sleep period. [5] Most antidepressants, in particular selective serotonin re-uptake inhibitors (SSRIs ...
As many as 70 million people have consistent sleeping issues. Not getting enough sleep each night can raise a person’s risk for several health concerns, including cognitive decline and dementia.
In addition, alcohol causes fragmented sleep and suppresses REM sleep, which plays a role in helping your brain process and consolidate new information and helps ensure better mental concentration ...
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