There is only one essential difference between consciousness and dreaming, and that is sensory input. Your experience is a dream, so is my experience. This stuff about how the frontal cortext is repressed during dreaming. Lucid dreaming presents an obvious contradiction to it. The only difference is sensory input.
Stephen LaBergeIn most of our dreams, our inner eye of reflection is shut and we sleep within our sleep. The exception takes place when we seem to awake within our dreams, without disturbing or ending the dream state, and learn to recognize that we are dreaming while the dream is still happening.
Stephen LaBergeIn the dream state, the only essential difference from waking is the relative absence of sensory input, which makes dreaming a special case of perception without sensory input.
Stephen LaBerge