Every once in a while as I am falling asleep, when I am in that in-between zone right before unconsiousness, for a split second I realize that my thoughts have somehow morphed into human voices having an elaborate (and nonsensical) conversation. Its as if the many conflicting aspects of thought have become separate people, with different voices and personalities, blathering in a whirling "solid" sound - like how a tornado is a "soild" shape, yet not... I usually snap to consiousness right as I notice this, left with the feeling that if I had stayed in that zone, the voices would have morphed further into actual dream people and situations. It almost feels like catching your dream in its exact "conception" stage, before it becomes visual...
It doesn't happen often - just something I catch from time to time and find fascinating. I tend to interpret these things neurologically rather than supernaturally - to me it seems like your brain's way of easing you into a dream as seamlessly as possible, so as not to jolt you awake with sudden imagery. Your thoughts become dense and more of raw emotions - the emotion (since most are composed of ambivalent/opposing feelings) split into arguing "personalities" in conversation (the words nonsensical, its more the "feeling" expressed) and then these voices morph somehow into the sounds, characters, tones and visuals of a dream. Its like a roulette wheel - whatever emotion/personality type was most prominent at the actual dream threshold is what sets the tone for the dream.
