I have these things call night terrors in which you dream while awake. You lay in your bed, paralized, and feel like something is going to get you. You don't know what, but something is after you and you have to RUN. Too bad you can't.
Somethings actually 'dreaming' happens while I'm in this state. Usually its shadowy figures surrounding me. Never can see them all that well, but they talk in whispers that sounds like snakes hissing. They come closer, and closer, and closer until I can almost see them, than I wake up.