Can you dream, or remember dreams, while unconscious from an accident?

Dream-Y, remember-N: While unconscious, your brainwave activity continues, and the unconscious remains active. It is not the same as a stage 4 rem sleep, where during the course of a night, you may go through the whole cycles every 90-120 minutes. The dream you are most likely to remember is the one closest to morning awakening. As long as one remain unconscious, there can be no 'conscious' memory-:).