Another situation of every-day life in which we become aware of the images is when riding in a street car at night we look out of the window and fail to recognize the individual buildings as we pass them though we perceive them as houses. The neighborhood being obscured by darkness, the buildings have no meaning from the point of view of their uses, proprietorship, locality, etc., but only from an architectural point of view. Then suddenly, by some apparently subconscious process, visual memory images of the unseen neighborhood (hidden in darkness), and of the interior of the buildings, flash into consciousness in conjunction with the actual visual pictures of the buildings. In imagination we at once see the locality and recognize (or apperceive) the buildings which acquire a new meaning as particular shops, which we have often entered, located in a particular locality, etc.
Again, take a tactual perception: If you close your eyes and touch, say a point on your left hand, with your finger, you not only perceive the touch but you perceive the exact spot that you touched. Your perception includes localization. Now if you fix your attention and introspect carefully you will find that you visualize your hand and see, more or less vividly, the point touched (and the touching finger). If you draw a figure on the hand you will visualize that figure. That is to say imaginal visual images of the hand, figure, etc., enter into the tactual perceptions. You will probably also be able to feel faint tactual “images” of the hand (joints, fingers, etc.) which combine with the visualization.[[156]] The whole complex is the perception proper.
The images which take part in actual perception, or in ideas of objects, vary with the mode of perception (whether visual, auditory, tactile, etc.) and with objects, and in different people. Reading, or the perception of words, is in many people accompanied by the sound of the words or kinesthetic images of words. If the printed words are those of a person whose voice is familiar to us we may actually hear his voice.[[157]] General kinesthetic images may occur in perception, as with objects which look heavy, i.e., have secondary tactual sensations of heaviness. Likewise tactile and olfactory images may enter the perceptual field and supplement the visual sensations. When the sensational experiences of perception are tactile, auditory, olfactory, or gustatory visual images probably always take part in the perceptual field if the object is perceived as, e. g., the perception of velvet by touch and of an orange by smell. Summing all this up we may say, using Titchener’s words: “perceptions are selected groups of sensations in which images are incorporated as an integral part of the whole process.” We may further say the secondary images give meaning to sensations in forming a perception.
Now, before proceeding further in this exposition, I would point out that if memory images are habitually synthesized with sensations to form a given perception, and if perception is a matter of synthesis, then, theoretically, it ought to be possible to dissociate these images. Further, in that case, the perception as such ought to disappear. That this theoretical assumption correctly represents the facts I have been able to demonstrate by the following experiment which I have repeated many times. I should first explain that it has been shown by Janet that by certain technical procedures some hysterics can be distracted in such a way that the experimenter’s voice is not consciously heard by them, but is heard and understood subconsciously. The ordinary procedure is to whisper to the subject while his attention is focused on something else. The whisper undoubtedly acts as a suggestion that the subject will not consciously hear what is whispered. The whispered word-images are accordingly dissociated, but are perceived coconsciously, and whatever coconsciousness exists can be in this way surreptitiously communicated with and responses obtained without the knowledge of the personal consciousness. In this way I have been able to make numerous observations showing the presence of dissociated coconscious complexes which otherwise would not have been suspected. Now the experiment which I am about to cite was made for the purpose of determining whether certain experiences for which the subject had amnesia were coconsciously remembered, but the results obtained, besides giving affirmative evidence on this point, furnished certain instructive facts indicative of the dissociation of secondary images.
The subject, Miss B., was in the state known as BIVa, an hypnotic state, her eyes closed. While she was conversing with me on a subject which held her attention I whispered in her ear with the view of communicating with coconscious ideas as above explained. While I was whispering, she remarked, “Where have you gone?” and later asked why I went away and what I kept coming and going for. On examination it then appeared that it seemed to her that during the moments when I whispered in her ear I had gone away. That is to say, she could no longer visualize my body, the secondary imaginal visual images being dissociated with my whispered words. At these times, however, she continued the conversation and was not at all in a dreamy state. Testing her tactile sense it was found that there was no dissociation of this sense during these moments. She felt tactile impressions while she was not hearing my voice, but she explained afterwards [while whispering, of course, I could not ask questions regarding sensations aloud] that when I touched her, and when she held my hand, palpating it in a curious way as if trying to make out what it was, she felt the tactile impressions, or tactile sensations, but not naturally. It appeared as the result of further observations that this feeling of unnaturalness and strangeness was due to a dissociation of the secondary visual images which normally occur with the tactile images. (She described the tactile impressions of my hand as similar to those she felt when she lifted her own hand when it had “gone to sleep”; it felt dead and heavy as if it belonged to no one in particular.
Testing further it was found that, before abstraction, while she held my hand she could definitely visualize my hand, arm, and even face. While she was thus visualizing I again abstracted her auditory perceptions by the whispering process. At once the secondary visual images of my hand, etc., disappeared. As with the auditory perceptions she could not obtain these visual images, although a moment before she could visualize as far as the elbow.
Desiring now to learn whether these dissociated visual images were perceived coconsciously I whispered, at the same time holding her hand, “Do you see my hand, arm, and face?” She nodded (automatically) “Yes.” “Does she [meaning the personal consciousness] see them?” (Answer by nod) “No.” (The personal consciousness (BIVa) was unaware of the questions and nodding; the latter was performed subconsciously.)
This experiment was repeated several times. As often as she ceased to hear my voice she ceased to visualize my hand, though she could feel it without recognizing it. It follows, therefore, that the dissociation of the auditory perceptions of my voice having also robbed the subject’s personal consciousness of all visual images of my body, her previous tactual perception of my hand lost thereby its visual images and ceased to be a perception.
Let us take another observation: We have seen that a tactual perception of the body includes secondary imaginal visual and other sensory images besides the tactile sensation. Now, of course, if sensation is dissociated so that one has complete anesthesia, no tactile sensation can be perceived. Under such conditions an anesthetic person theoretically might not be able to imagine the dissociated tactile sensations and the associated visual images included in tactile perception. If so such a person would not be able to visualize his body. In other words, in accordance with the well-known principle that the dissociation of a specific memory robs the personal consciousness of other elements of experiences synthesized with the specific memory, the dissociation of the tactile images carries with it the visual images associated in perception. This theoretical proposition is confirmed by actual observation. Thus B. C. A. in one hypnotic state has general anesthesia, so complete that she has no consciousness of her body whatsoever. She does not know whether she is standing or sitting, nor the attitude of her limbs, or her location in space; she is simply thought in space. Now it is found that she can visualize the experimenter, the room, and the objects in the room although she cannot visualize any part of her own body. The dissociation of the tactual field of consciousness is so complete that she cannot evoke imaginal tactual images of the body, and this dissociation of these images carries with it that of the associated imaginal visual images. Visual images of the environment, however, not being synthesized with the tactual body images, can be still evoked. So we see from observations based on introspection and experimentation that perception includes, besides primary simple sensations of an object, secondary imaginal images of various kinds and in various numbers.
Besides images the content of ideas includes “Meaning”.—What I have said thus far refers to perception and idea as the content of consciousness—a group of conscious states. But this is not all when perception is regarded as a process. The objects of experience have associative relations to other objects, actions, conduct, stimuli, constellated ideas, etc., i.e., past experiences represented by conserved (unconscious) complexes. As a result of previous experiences various associations have been organized with ideas and these complexes form the setting or the “context” (Tichener) which gives ideas meaning. As the secondary images give meaning to sensations to form ideas (or perceptions), so these associated complexes as settings give meaning to ideas. This setting in more general terms may be regarded as the attitude of mind, point of view, interest, etc. Just as the context in a printed sentence gives meaning to a given word, and determines which of two or more ideas it is meant to be the sign of, so in the process of all perceptions the associated ideas give meaning to the perception. Indeed it is probable that the context as a process determines what images shall become incorporated with sensations to form the nucleus of the perception. Perception thus takes one meaning when it is constellated with one complex and another meaning when constellated with another complex.