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Nightmare of sleep paralysis

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Posted on May 9, 2017

This may sound like something out of a horror movie, but it is an actual phenomenon many people describe experiencing. Though the ghostlike figures aren’t real, the physical sensation and fear are genuine. Experts say it’s a typical episode of sleep paralysis.

The condition is defined by the inability to move or speak while falling asleep or upon waking, and usually lasts for a minute or two. It is sometimes accompanied by hallucinations that are essentially projections of dream imagery. Many who suffer from it describe feeling heaviness on the chest and the overwhelming sensation of another presence in the room. The combination produces the terrifying feeling of a real-life nightmare.

So what causes sleep paralysis? Christopher French, Ph.D., studies it as head of the Anomalistic Psychology Research Unit at Goldsmiths, University of London. (“Anomalistic Psychology attempts to explain paranormal and related beliefs,” his department’s website explains.) French says sleep paralysis happens during rapid eye movement (REM) sleep, the stage of sleep in which dreams occur.

“During REM sleep, the muscles are actually, literally paralyzed. Usually you’re not aware of it because you’re aware of whatever you’re dreaming about. Putting it simply, it’s that your brain has woken up but your body hasn’t.”

Those who experience sleep paralysis can see that they are still in their bedrooms, he said, but they can’t move.

In the documentary “Devil in the Room,” people describe frightening episodes of sleep paralysis. “My bed was shaking and I felt like I was being strangled,” one recalled. “The only thing I could move was my eyes, but I felt like there was a presence in my room,” said another. “Pressure holding me down. Screaming and screaming and asking for help, but your mouth isn’t moving.” “There was a woman levitated in bed next to me.”

“It’s absolutely terrifying,” French said. However, he emphasized that experiencing sleep paralysis is completely normal and has a scientific explanation.

“After a very vivid episode, you’re going to think ‘well, either I’m crazy or that was real,’ and neither of those two alternatives are that great,” he said. “But it’s not real and you’re not going crazy. We do generally know in scientific terms what causes it and I think that can be very reassuring.”

sleep paralysis?

After analyzing a sample size of over 36,000 people from a variety of cultures and groups, he found that about 8 percent of the general population experiences sleep paralysis, with some groups at a higher risk. About 28 percent of students, for example, reported incidents of sleep paralysis, while 32 percent of people with psychiatric disorders such as depression or anxiety said they experienced it, as well.

This makes sense, as sleep paralysis is greatly affected by quality of sleep. “Any kind of disrupted sleep, whether it’s because you don’t have a regular schedule, you have jetlag, or you do shift work seems to make sleep paralysis more likely. Overall, I think it’s much more common than people may think.”

Sleep paralysis history

Sleep experts have known about sleep paralysis for years. It’s been a recognized diagnosis in the American Academy of Sleep Medicine’s Diagnostic Classification of Sleep and Arousal Disorder since its very first issue published in 1979.

But it’s just starting to become more well-known in popular culture, as projects like “Devil in the Room” make their way around the Internet. Just last year, a hybrid film of documentary and horror about sleep paralysis called “The Nightmare” debuted at the Sundance Film Festival.

According to a 2008 research paper, a 17th century Dutch physician recorded a case report of a patient’s symptoms that describes episodes of sleep paralysis, suggesting physicians have known about the condition for hundreds of years.

One theory suggests sleep paralysis may also have played a role in the Salem Witch trials. A 2003 paper quotes a possible description of sleep paralysis found in evidence used in the 1692 trials. Bernard Peach testified that one night, “he heard a scrabbling at the window, whereat he then saw Susanna Martin come in, and jump down upon the floor. She took hold of this deponent’s feet, and drawing his body up into an heap, she lay upon him near two hours; in all which time he could neither speak nor stir.”

Different cultures around the world have also come up with fables and tales to explain what happens during an episode of sleep paralysis.

While research on the best methods to treat sleep paralysis is lacking, experts say the best way to prevent it is to practice good sleep hygiene.

Of course, for sufferers of sleep paralysis, this can often be difficult to accomplish. “One of the things that happen to people who get sleep paralysis is that they become frightened to go to sleep,” French said. “And that disrupts the sleep cycle and that makes it more likely that it will happen. So it’s really a horrible vicious circle.”

While it’s happening, it can be difficult to “break the spell” of sleep paralysis, but French said a lot of the patients he’s spoken to have actually learned to recognize their episodes and a few have actually come to enjoy them. “Basically the way you enjoy a good horror movie.

Some people have reported that focusing on a small body part, like a finger or toe, and trying to wiggle it, is helpful,” Sharpless said. “Trying to relax and tell yourself that it’s sleep paralysis and those aren’t really aliens in your bedroom can be a good way to talk yourself down. It may be helpful just to reassure yourself that it’s a natural experience and that it’s really nothing to physically worry about.

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