[MightySunTzu]

Originally Posted by Writertype

Hypnagogia - Wikipedia, the free encyclopedia. Hypnagogic hallucination. When people go to sleep or wake up there is a kind of "transition" state between sleeping and waking in which you can have auditory, visual, or other hallucinations. It's nothing to worry about, and it's actually kind of neat (I think) from a scientific standpoint, although it's a little scary when it happens to you. Check out hypnagogic and hypnapompic hallucinations on google for more information.

This really nails it. Excellent contribution Writertype.