Let me suggest that the brain is a piece of hardware, a computer terminal, which normally processes the input provided by the sense in the waking state. When the input from the senses is not processed, as in deep sleep, this piece of hardware is in a state of complete rest and is not generating any images. However, as soon as our consciousness becomes focused in the astral during the dreaming cycles, information from that reality will pour in, and the imagery of the action produced in the brain will be followed by movements of the eyes and sometimes limbs.