I once read something about it but now I cannot find it.

I get scared alot in the the "Zone between sleeping and not sleeping" (What is the name of this state or place?).

I can't move, but I'm still awake, and I can sometimes even open my eyes and move nothing but my eyes.
I can only hear what is going on outside me a little.

But the fear...
I get the worse fear ever.
It's worse than any other fear I've ever felt, in my nightmares or in real life.

It feels like you're stuck there, and that something very, very evil is standing right behind you, right next to you, and very often right ON you, that it's evil gaze is pinning you down, immobilizing you in every way possible, so it can take your soul to a world of terror.

It feels like the most scary, evil thing ever, like it's going to chill you to the very core before killing you as slowly and painfully as physically possible.

Also, it feels like to look at it would shatter your mind and your heart, for it is the most fearful thing ever.

It might sound cynical or something, but it's true. It's exactly like that.