![]() Stage 3: non-REM sleep that is deep and restorative. Stage 2: non-REM (rapid eye movement) sleep that involves entering a light sleep. This stage is called deep sleep or slow-wave sleep, after a particular pattern that appears in. Stage 1: moving from a state of being awake to falling asleep. This stage is the transition between wakefulness and sleep. Newfoundlanders know it as the "Old Hag." In China, it's the "ghost pressing down on you." And in Mexico, it's known by the idiom "subirse el muerto," or "the dead climb on top of you."Įven today, some researchers suspect that tales of alien abduction may be explained by episodes of sleep paralysis. Non-REM sleep has three stages, defined by measurements of brain activity taken in sleep studies. That sensation has given sleep paralysis a place in folklore worldwide. And these hallucinations, when they occur with sleep paralysis, are no picnic people commonly report sensing an evil presence, along with a feeling of being crushed or choked. In one 1999 study published in the Journal of Sleep Research, 75 percent of college students who'd experienced sleep paralysis reported simultaneous hallucinations. Sleep apnea, alcohol, or anything that disturbs sleep can. "But you just can't."Įven worse, sleep paralysis often coincides with number 7 on our list: hallucinations. Alarm clocks, and irregular sleep schedules can result in abrupt waking during dream or REM sleep, and thus result in recall of dreams. ![]() "You know you're awake and you want to move," Kline said. Sometimes, though, the paralysis persists even after the person wakes up. This temporary paralysis keeps us from acting out our dreams and hurting ourselves. During REM sleep, dream activity ramps up and the voluntary muscles of the body become immobile. ![]()
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