rem
Sleep Apnea
hypnagogic state
It is similar to the feeling of a "falling dream" when stage one of sleep is reached. Hypnagogia is the point between wakefulness and sleep.
A hallucination that occurs after REM state when you're awakening.
A hypnagogic hallucination refers to the transitional states of to and from sleep. It is also referred to as hypnagogia and has been popular in the Psychology literature since 1983.
ύπνος hypnos [eepnos] (see hypnotize) (=the sleep)κώμα = coma (deep sleep)κοιμάμαι [keemame] (= I sleep)νάρκη [narkee] = numbness (see narcotic)λήθαργο [leethargo] = lethargy, the state of being drowsy
Hypnagogic Hallucination/Sleep Paralysis
Is REM sleep deprivation associated with SIDS?
Restless legs syndrome (RLS) or Wittmaack-Ekbom syndrome is a neurological disorder characterized by an irresistible urge to move one's body to stop uncomfortable or odd sensations. It most commonly affects the legs, but can affect the arms, torso, and even phantom limbs. Moving the affected body part modulates the sensations, providing temporary relief.RLS sensations can most closely be compared to an itching or tickling in the muscles, like "an itch you can't scratch" or an unpleasant "tickle that won't stop." The sensations typically begin or intensify during quiet wakefulness, such as when relaxing, reading, studying, or trying to sleep.In addition, most individuals with RLS have limb jerking during sleep, which is an objective physiologic marker of the disorder and is associated with sleep disruption. Some controversy surrounds the marketing of drug treatments for RLS. It is a "spectrum" disease with some people experiencing only a minor annoyance and others experiencing major disruption of sleep and significant impairments in quality of life
Medications include antidepressants (tricyclic antidepressants or SSRIs) treat cataplexy, hypnagogic hallucinations, sleep paralysis and stimulants (amphetamines) may increase alertness.
Sleep apnea
It depends upon which part of the word is most important. If "sleep" is the essential part, then the root is hypnos; but if "leading to, or causing" is the core meaning, then the root is ago, to lead.