Lest anyone think me a cad for being rude to a woman, permit me to explain that NewYork44M is a GUY, not a woman as his avatar suggests.
I appreciate the many fascinating contributions to this thread, and I remembered that when I was younger I would sometimes wake up in an emotional mood - happy and expectant or really really angry - based on the events that unfolded in my dreams just prior to waking up. These weren't hallucinations, but emotional states predicated by dreams.
When my wife was very young she often experienced NIGHT TERRORS with images that would do Alfred Hitchcock proud. She once had an open-eyed vision of gigantic bubbles slowly sliding down her bedroom wall.