Scientifically, why do we have vivid hallucinations during sleep

Another retard thread

>>9087000
Is that how you debunk the paranormal? By calling it 'retarded' and offering no explanation?

>>9087001
Literally a quick google search will give you an explanation, retard.

>>9087004
If you actually googled it for yourself you would see that there is nothing but very basic information on the subject that doesn't at all explain the questions in the OP.

>>9087010
Maybe if you used intuition. This thread will go nowhere since you used the term "paranormal".

>>9086998
>There seems to be little scientific explanation, and yet, people choose to believe that it's not paranormal in nature.
Fuck off.

>>9086998
I have had multiple episodes of sleep paralysis and the way I see it is like this...

Sleep paralysis is basically a state where you are half asleep and half awake. You are fully conscious and can take in sensory input from the 'real world', yet sometimes it is overlayed with the 'dream world' - hence hallucinations

Your brain releases a chemical that keeps you from moving around in your sleep, sometimes you don't wake up all the way, so you're still dreaming, still can't move, but you're conscious. This feeling causes you to panic. Panicking causes your dreams/hallucinations to become spooky. Which is why you feel like evil spirits are crushing you or w/e.