Sleep paralysis demons have become a key figure in meme culture, but they aren't so funny for those who experience them.

Maybe you’ve seen the meme: “This is my sleep paralysis demon: [insert photo].” The viral idea builds on a very real condition in which a person is conscious but unable to move. In some ...

The hallucinations experienced during sleep paralysis are either hypnagogic hallucinations, which occur when a person is falling asleep, or hypnopompic hallucinations, which happen when waking up.

Around 30% of people will experience sleep paralysis at least once. Here’s why and what you can do about it.

Why Sleep Paralysis Demons Really Visit Us at Night You’re awake, but you can’t move. Is that a shadow moving toward you? Sleep paralysis demons aren’t unique, they’ve been visiting other cultures for ...

The sleep demon is actually a hallucination linked to sleep paralysis, which occurs when a person is jolted awake in the middle of the rapid eye movement (REM) phase of sleep associated with dreaming.