I meant to post something that had happened to me a couple of weeks ago. I looked on the internet, but let me explain first:
I was alone (Mr.S away at work) and I woke up in the middle of the night because I felt a disturbance. When I woke and before I opened my eyes, I thought someone was standing in front of me ... or at least I had the "afterimage" of someone standing in front of me (they were a dark figure with light behind them.) Ok shrug it off, I just woke up ... no biggie, shyt happens. I opened my eyes, thought it was a dream. It was still dark in the room, with some light coming from the window in front of me from the moon. I closed my eyes and had the same afterimage. I opened my eyes again to make sure no one was actually standing there.
I went back to sleep with the image still there (I didn't care enough to become fully awake.) What doesn't make sense is the afterimage itself, b/c that is the negative of what you are seeing. Hypothetically if there actually was someone standing there ... he (and I say he, b/c it was a he) would have been the bright light with darkness behind him.
Hmm. Just something to ponder.