Dom began having unusual experiences when he was eight or nine. He would wake up unable to move. He researched what was happening to him. And he learned that science had a name for it: sleep paralysis. This condition leaves someone feeling awake but paralyzed, or frozen in place. He can’t move or speak or breathe deeply. He may also see, hear or feel figures or creatures that aren’t really there. This is called a hallucination (Huh-LU-sih-NA-shun).
Sometimes, Dom hallucinated that creatures were walking or sitting on him. Other times, he heard screaming. He only saw something that one time, as a teenager.
Sleep paralysis happens when the brain messes up the process of falling asleep or waking. Usually, you only start dreaming after you’re fully asleep. And you stop dreaming before you waken.
While dreaming in REM sleep, the body is usually paralyzed, unable to act out the motions the dreamer might see herself performing. Sometimes, a person wakes up while still in this state. That can be terrifying.
Sleep paralysis “is like dreaming with your eyes open,” explains Baland Jalal. A neuroscientist, he studies sleep paralysis at the University of Cambridge in England. He says this is why it happens: Our most vivid, lifelike dreams happen during a certain stage of sleep. It’s called rapid eye movement, or REM, sleep. In this stage, your eyes dart around under their closed lids. Though your eyes move, the rest of your body can’t. It’s paralyzed. Most likely, that’s to prevent people from acting out their dreams. (That could get dangerous! Imagine flailing your arms and legs as you play dream basketball, only to whack your knuckles on the wall and tumble to the floor.)
Your brain usually turns this paralysis off before you wake up. But in sleep paralysis, you wake up while it’s still happening.
Nice article