E. The Psychological Peculiarities of Dreams
In our scientific investigation of dreams we start with the assumption that dreams are a phenomenon of our own psychic activity; yet the completed dream appears to us as something alien, whose authorship we are so little inclined to recognize that we should be just as willing to say “A dream came to me,” as “I dreamed.” Whence this “psychic strangeness” of dreams? According to our exposition of the sources of dreams, we must assume that it is not determined by the material which finds its way into the dream-content, since this is for the most part common both to dream-life and waking life. We might ask ourselves whether this impression is not evoked by modifications of the psychic processes in dreams, and we might even attempt to suggest that the existence of such changes is the psychological characteristic of dreams.
No one has more strongly emphasized the essential difference between dream-life and waking life and drawn more far reaching conclusions from this difference than G. Th. Fechner in certain observations contained in his Elemente der Psychophysik (Part II, p. 520). He believes that “neither the simple depression of conscious psychic life under the main threshold,” nor the distraction of the attention from the influences of the outer world, suffices to explain the peculiarities of dream-life as compared with waking life. He believes, rather, that the arena of dreams is other than the arena of the waking life of the mind. “If the arena of psychophysical activity were the same during the sleeping and the waking state, the dream, in my opinion, could only be a continuation of the waking ideational life at a lower degree of intensity, so that it would have to partake of the form and material of the latter. But this is by no means the case.”
What Fechner really meant by such a transposition of the psychic activity has never been made clear, nor has anybody else, to my knowledge, followed the path which he indicates in this remark. An anatomical interpretation in the sense of physiological localization in the brain, or even a histological stratification of the cerebral cortex, must of course be excluded. The idea might, however, prove ingenious and fruitful if it could refer to a psychical apparatus built up of a number of successive and connected systems.
Other authors have been content to give prominence to this or that palpable psychological peculiarity of the dream-life, and even to take this as a starting-point for more comprehensive attempts at explanation.
It has been justly remarked that one of the chief peculiarities of dream-life makes its appearance even in the state of falling asleep, and may be defined as the sleep-heralding phenomenon. According to Schleiermacher (p. 351), the distinguishing characteristic of the waking state is the fact that its psychic activity occurs in the form of ideas rather than in that of images. But the dream thinks mainly in visual images, and it may be noted that with the approach of sleep the voluntary activities become impeded in proportion as involuntary representations make their appearance, the latter belonging entirely to the category of images. The incapacity for such ideational activities as we feel to be deliberately willed, and the emergence of visual images, which is regularly connected with this distraction- these are two constant characteristics of dreams, and on psychological analysis we are compelled to recognize them as essential characteristics of dream-life. As for the images themselves the hypnogogic hallucinations- we have learned that even in their content they are identical with dream-images. *
* Silberer has shown by excellent examples how in the state of falling asleep even abstract thoughts may be changed into visible plastic images, which, of course, express them. (Jahrbuch, Bleuler-Freud, vol. i, 1900.) I shall return to the discussion of his findings later on.
Dreams, then, think preponderantly, but not exclusively, in visual images. They make use also of auditory images, and, to a lesser extent, of the other sensory impressions. Moreover, in dreams, as in the waking state, many things are simply thought or imagined (probably with the help of remnants of verbal conceptions). Characteristic of dreams, however, are only those elements of their contents which behave like images, that is, which more closely resemble perceptions than mnemonic representations. Without entering upon a discussion of the nature of hallucinations- a discussion familiar to every psychiatrist- we may say, with every well-informed authority, that the dream hallucinates- that is, that it replaces thoughts by hallucinations. In this respect visual and acoustic impressions behave in the same way. It has been observed that the recollection of a succession of notes heard as we are falling asleep becomes transformed, when we have fallen asleep, into a hallucination of the same melody, to give place, each time we wake, to the fainter and qualitatively different representations of the memory, and resuming, each time we doze off again, its hallucinatory character.
The transformation of an idea into a hallucination is not the only departure of the dream from the more or less corresponding waking thought. From these images the dream creates a situation; it represents something as actually present; it dramatizes an idea, as Spitta (p. 145) puts it. But the peculiar character of this aspect of the dream-life is completely intelligible only if we admit that in dreaming we do not as a rule (the exceptions call for special examination) suppose ourselves to be thinking, but actually experiencing; that is, we accept the hallucination in perfectly good faith. The criticism that one has experienced nothing, but that one has merely been thinking in a peculiar manner- dreaming- occurs to us only on waking. It is this characteristic which distinguishes the genuine dream from the day-dream, which is never confused with reality.
The characteristics of the dream-life thus far considered have been summed up by Burdach (p. 476) as follows: “As characteristic features of the dream we may state (a) that the subjective activity of our psyche appears as objective, inasmuch as our perceptive faculties apprehend the products of phantasy as though they were sensory activities… (b) that sleep abrogates our voluntary action; hence falling asleep involves a certain degree of passivity… The images of sleep are conditioned by the relaxation of our powers of will.”
It now remains to account for the credulity of the mind in respect to the dream-hallucinations which are able to make their appearance only after the suspension of certain voluntary powers. Strumpell asserts that in this respect the psyche behaves correctly and in conformity with its mechanism. The dream-elements are by no means mere representations, but true and actual experiences of the psyche, similar to those which come to the waking state by way of the senses (p. 34). Whereas in the waking state the mind thinks and imagines by means of verbal images and language, in dreams it thinks and imagines in actual perceptual images (p. 35). Dreams, moreover, reveal a spatial consciousness, inasmuch as in dreams, just as in the waking state, sensations and images are transposed into outer space (p. 36). It must therefore be admitted that in dreams the mind preserves the same attitude in respect of images and perceptions as in the waking state (p. 43). And if it forms erroneous conclusions in respect of these images and perceptions, this is due to the fact that in sleep it is deprived of that criterion which alone can distinguish between sensory perceptions emanating from within and those coming from without. It is unable to subject its images to those tests which alone can prove their objective reality. Further, it neglects to differentiate between those images which can be exchanged at will and those in respect of which there is no free choice. It errs because it cannot apply the law of causality to the content of its dreams (p. 58). In brief, its alienation from the outer world is the very reason for its belief in its subjective dream-world.
Delboeuf arrives at the same conclusion through a somewhat different line of argument. We believe in the reality of dream-pictures because in sleep we have no other impressions with which to compare them; because we are cut off from the outer world. But it is not because we are unable, when asleep, to test our hallucinations that we believe in their reality. Dreams can make us believe that we are applying such tests- that we are touching, say, the rose that we see in our dream; and yet we are dreaming. According to Delboeuf there is no valid criterion that can show whether something is a dream or a waking reality, except- and that only pragmatically- the fact of waking. “I conclude that all that has been experienced between falling asleep and waking is a delusion, if I find on waking that I am lying undressed in bed” (p. 84). “I considered the images of my dream real while I was asleep on account of the unsleeping mental habit of assuming an outer world with which I can contrast my ego.” *
* Haffner, like Delboeuf, has attempted to explain the act of dreaming by the alteration which an abnormally introduced condition must have upon the otherwise correct functioning of the intact psychic apparatus; but he describes this condition in somewhat different terms. He states that the first distinguishing mark of dreams is the abolition of time and space, i.e., the emancipation of the representation from the individual’s position in the spatial and temporal order. Associated with this is the second fundamental character of dreams, the mistaking of the hallucinations, imaginations, and phantasy-combinations for objective perceptions. “The sum-total of the higher psychic functions, particularly the formation of concepts, judgments, and conclusions on the one hand, and free self-determination on the other hand, combine with the sensory phantasy-images, and at all times have these as a substratum. These activities too, therefore, participate in the erratic nature of the dream-representations. We say they participate, for our faculties of judgment and will are in themselves unaltered during sleep. As far as their activity is concerned, we are just as shrewd and just as free as in the waking state. A man cannot violate the laws of thought; that is, even in a dream he cannot judge things to be identical which present themselves to him as opposites. He can desire in a dream only that which he regards as a good (sub ratione boni). But in this application of the laws of thought and will the human intellect is led astray in dreams by confusing one notion with another. Thus it happens that in dreams we formulate and commit the greatest of contradictions, while, on the other hand, we display the shrewdest judgment and arrive at the most logical conclusions, and are able to make the most virtuous and sacred resolutions. The lack of orientation is the whole secret of our flights of phantasy in dreams, and the lack of critical reflection and agreement with other minds is the main source of the reckless extravagances of our judgments, hopes and wishes in dreams” (p. 18).
If the turning-away from the outer world is accepted as the decisive cause of the most conspicuous characteristics of our dreams, it will be worth our while to consider certain subtle observations of Burdach’s, which will throw some light on the relation of the sleeping psyche to the outer world, and at the same time serve to prevent our over-estimating the importance of the above deductions. “Sleep,” says Burdach, “results only under the condition that the mind is not excited by sensory stimuli… yet it is not so much a lack of sensory stimuli that conditions sleep as a lack of interest in them; * some sensory impressions are even necessary in so far as they serve to calm the mind; thus the miller can fall asleep only when he hears the clatter of his mill, and he who finds it necessary, as a matter of precaution, to burn a light at night, cannot fall asleep in the dark” (p. 457).
* Compare with this the element of “Desinteret,” in which Claparede (1905) finds the mechanism of falling asleep.
“During sleep the psyche isolates itself from the outer world, and withdraws from the periphery…. Nevertheless, the connection is not entirely broken; if one did not hear and feel during sleep, but only after waking, one would assuredly never be awakened at all. The continuance of sensation is even more plainly shown by the fact that we are not always awakened by the mere force of the sensory impression, but by its relation to the psyche. An indifferent word does not arouse the sleeper, but if called by name he wakes… so that even in sleep the psyche discriminates between sensations…. Hence one may even be awakened by the obliteration of a sensory stimulus, if this is related to anything of imagined importance. Thus one man wakes when the nightlight is extinguished, and the miller when his mill comes to a standstill; that is, waking is due to the cessation of a sensory activity, and this presupposes that the activity has been perceived, but has not disturbed the mind, its effect being indifferent, or actually reassuring” (p. 46, etc.).
Even if we are willing to disregard these by no means trifling objections, we must yet admit that the qualities of dream-life hitherto considered, which are attributed to withdrawal from the outer world, cannot fully account for the strangeness of dreams. For otherwise it would be possible to reconvert the hallucinations of the dream into mental images, and the situations of the dream into thoughts, and thus to achieve the task of dream-interpretation. Now this is precisely what we do when we reproduce a dream from memory after waking, and no matter whether we are fully or only partially successful in this retranslation, the dream still remains as mysterious as before.
Furthermore, all writers unhesitatingly assume that still other and profounder changes take place in the plastic material of waking life. Strumpell seeks to isolate one of these changes as follows: (p. 17) “With the cessation of active sensory perception and of normal consciousness, the psyche is deprived of the soil in which its feelings, desires, interests, and activities are rooted. Those psychic states, feelings, interests, and valuations, which in the waking state adhere to memory-images, succumb to an obscuring pressure, in consequence of which their connection with these images is severed; the perceptual images of things, persons, localities, events and actions of the waking state are, individually, abundantly reproduced, but none of these brings with it its psychic value. Deprived of this, they hover in the mind dependent on their own resources…”
This annihilation of psychic values, which is in turn referred to a turning away from the outer world, is, according to Strumpell, very largely responsible for the impression of strangeness with which the dream is coloured in our memory.
