ay, there’s the rub
Hamlet (III, i, 65-68)
Fascinating piece on sleep paralysis in The Conversation:
“There are three categories of hallucinations. Intruder hallucinations consist of a sense of evil presence in the room, which can also manifest into hyper realistic multisensory hallucinations of an actual intruder. Incubus hallucinations often co-occur with intruder hallucinations, and describe a sensation of pressure on the chest and feelings of being suffocated.
The third category include so-called vestibular-motor hallucinations, which typically don’t occur with the other two, and consist of “illusory movement experiences” such as floating above the bed…
A team of Japanese researchers were recently able to induce episodes of sleep paralysis by systematically depriving participants of REM sleep…
Recordings of brain activity during sleep paralysis show it to be a unique state of consciousness. A recent study showed that a participant’s brain activity during sleep paralysis was indistinguishable from a brain recording created by combining a recording from when they were awake, and when they were in REM sleep.” (emphasis added)
– Tim Cocks