Taiwanese Doctor Explains 'Ghost Pressing the Bed' as Sleep Paralysis, Not Supernatural

As the traditional 'Ghost Gate' opens and the lunar seventh month begins, many in Taiwan are reminded of the unsettling experience known as "ghost pressing the bed." This phenomenon, where individuals wake up fully conscious but unable to move, speak, or even turn over, is often attributed to supernatural causes in folklore. However, medical experts clarify that it is a scientifically explained condition called sleep paralysis.

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This is commonly known as 'ghost pressing the bed.' In Taiwanese folklore, many people intuitively associate it with supernatural phenomena, but from a neuroscience perspective, it is a sleep phenomenon with a clear mechanism, called 'sleep paralysis.'

Dr. Tam Wing Hong, a psychiatrist, explains that sleep paralysis occurs when the brain gets caught in a transition phase between wakefulness and REM (Rapid Eye Movement) sleep. During REM sleep, the brain is highly active, but a natural mechanism called REM atonia temporarily paralyzes voluntary muscles to prevent sleepers from acting out their dreams. In sleep paralysis, consciousness returns before the body's muscle atonia fully releases, leaving the person temporarily immobile.

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When sleep paralysis occurs, your consciousness has already woken up, but your body is still in the REM muscle locking state. Simply put, your brain is stuck between 'awake' and 'dreaming,' consciousness is online, but the body's remote control is still asleep.

The terrifying hallucinations often accompanying sleep paralysis, such as seeing shadowy figures or feeling a heavy presence on the chest, are also linked to the lingering effects of REM sleep. The brain, still partially in a dream state, can blend dream imagery with the real environment. The sensation of being pressed down is thought to be related to altered breathing patterns during REM sleep, leading to a feeling of suffocation that the brain interprets as external pressure.

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The entire experience, although very frightening, has corresponding neuroscience explanations for every part, and has nothing to do with supernatural phenomena.

While the experience can be frightening, medical professionals emphasize that sleep paralysis is harmless and has clear neurological explanations. Several factors can increase its occurrence, including insufficient or irregular sleep, high stress and anxiety levels, and sleeping in a supine position. Certain medical conditions, like narcolepsy, can also significantly increase the frequency of sleep paralysis. To mitigate episodes, experts recommend maintaining a regular sleep schedule, ensuring adequate sleep duration, managing stress, and reducing screen time before bed. If episodes become frequent or are accompanied by excessive daytime sleepiness, consulting a sleep specialist is advised.

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The phenomenon, although terrifying, is completely harmless, and your body has no problems. It's just a small error the brain occasionally makes during sleep stage transitions.