First off, I'm really glad no one has brought up alien abductions in this thread. hahaha!
uhh...Anyway...
These types of dreams/hallucinations/whatever have been a part of life for as long as I can remember, though they were much more common when I was young and would happen sometimes during the day when I was awake.
Without going too much into it, my home was an incredibly stressful place. Not as bad as physical abuse, but probably not much better either.
Over the years I'd come to just accept that I was crazy and stupid (less intelligent than average, almost retarded), and fell into alcohol and marijuana. That didn't help my intelligence any, but it helped me not care that I was stupid.
At some point in my early twenties I met a man that became a mentor to me, gave me a job, and eventually pounded into my head that I actually was smart enough to learn how to be intelligent and, in his own way, taught me how to live without drugs and alcohol again.
It's been nearly seven years since he started me on the road to fixing myself and it's been much easier to deal with stress now that I know how to recognize it.
I've recently taken an interest in looking into the problems from my childhood that still linger.
The dreams, sounds, and other sensations such as controlling my hands and body from the outside seem to have always happened during and after stressful situations.
Even as an adult of 30 these (and other) symptoms still return when I try to remember forgotten periods of my childhood or when I'm around my parents for long periods of time, though they're nowhere near as severe now. No more than minor annoyances and gone in a minute or two.
The dreams have stopped almost entirely and sleepwalking has been reduced to sometimes finding a half-a-glass of water on my nightstand that wasn't there when I went to bed.
Anyway, the way I beat my mental disorders were with good counsel, a good sleep schedule, good nutrition and exercise, and staying away from pot and other drugs.
Also, separating myself from the people and places that caused the stress was a great deal of help, though I know that's not always possible.