Page:Freud - The interpretation of dreams.djvu/471

Rh on the form of dramatisation. The subject of compression will be discussed later. The dream process has now terminated the second part of its repeatedly impeded course. The first part expended itself progressively from the unconscious scenes or phantasies to the foreconscious, while the second part gravitates from the advent of the censor back to the perceptions. But when the dream process becomes a content of perception it has, so to speak, eluded the obstacle set up in the Forec. by the censor and by the sleeping state. It succeeds in drawing attention to itself and in being noticed by consciousness. For consciousness, which means to us a sensory organ for the reception of psychic qualities, may receive stimuli from two sources—first, from the periphery of the entire apparatus, viz. from the perception system, and, secondly, from the pleasure and pain stimuli, which constitute the sole psychic quality produced in the transformation of energy within the apparatus. All other processes in the Ψ-system, even those in the foreconscious, are devoid of any psychic quality, and are therefore not objects of consciousness inasmuch as they do not furnish pleasure or pain for perception. We shall have to assume that those liberations of pleasure and pain automatically regulate the outlet of the occupation processes. But in order to make possible more delicate functions, it was later found necessary to render the course of the presentations more independent of the manifestations of pain. To accomplish this the Forec. system needed some qualities of its own which could attract consciousness, and most probably received them through the connection of the foreconscious processes with the memory system of the signs of speech, which is not devoid of qualities. Through the qualities of this system, consciousness, which had hitherto been a sensory organ only for the perceptions, now becomes also a sensory organ for a part of our mental processes. Thus we have now, as it were, two sensory surfaces, one directed to perceptions and the other to the foreconscious mental processes.

I must assume that the sensory surface of consciousness devoted to the Forec. is rendered less excitable by sleep than that directed to the P-systems. The giving up of interest for the nocturnal mental processes is indeed purposeful. Nothing is to disturb the mind; the Forec. wants to sleep.