One other example of episodic amnesia I will cite, inasmuch as, aside from the question of conservation, it is of practical importance, being typical of experiences which lead to obsessions of phobia. The subject, O. N., had an intense fear of towers such as might contain bells that might ring. She had no recollection of the first occasion when the fear occurred or of any experience which might have given rise to it, and, of course, could give no explanation of the obsession. Neither in abstraction or hypnosis could any related memories be evoked, but by automatic writing she “unconsciously” described an emotional and dramatic scene which was the occasion of the first occurrence of the fear and which had taken place some twenty-five years previously when she was a young girl.
With the reason for the amnesia we are not particularly concerned at present excepting so far as it serves to make clear the distinction between recollection and conservation, and to throw light on the nature of the latter. The episodes in both these instances were of a strongly emotional character. Now we have known for many years from numerous observations that emotion tends to disrupt the mind and to dissociate the experiences which give rise to the affective state so that they cannot be brought back into consciousness. We may particularize further and, making use of the known impulsive force of emotion, attribute the dissociation (or inhibition) in many cases to a conflict between certain ideas belonging to the experience and other opposing ideas which, with the emotion, they have awakened. The impulsive force of the latter ideas, being the stronger, dissociates, or, to use the expressive term introduced by Freud, represses, the former. The principle of dissociation by conflict has been formulated and elaborated by Freud in his well-known theory which has been made use of to explain all functional amnesias. It is not necessary to go as far as that, nor does the theory as such concern us now. It is sufficient if in certain cases the amnesia (or dissociation) is a dissociation (repression) induced by the conative force of conflicting emotion. If so we should expect that the amnesia would be of a temporary nature and would continue only so long as the conflict and dissociating force continued. In any favorable moment when repression ceased or failed to be operative, as in hypnosis or abstraction, reproduction (recollection) could occur. But this requires that the registration of the experience should be something specific that can be dissociated without obliteration. And, further, it must be something that can be so conserved, somehow and somewhere, during dissociation that, as in the case of reproduction by automatic writing, it can escape the influence of the repressing force and express itself autonomously, i.e., without the expressed memory of the experience entering the personal consciousness. To this we shall return later.
In the two examples I have cited, if my interpretation is correct, the amnesia was due to dissociation by conflict and hence the conservation, as is the rule in functional dissociation, and the reproduction by automatic writing. This principle of dissociation by conflict and of conservation of the dissociated remembrances is of great practical importance as we shall see in later lectures. It can be best studied experimentally with cases of multiple personality. In the case of Miss B. numerous examples of amnesia from conflict were observed. Owing to the precise organization of the consciousness into two distinct personalities it was possible to definitely determine beyond question the antagonistic ideas of one personality which voluntarily induced the conflict and, by the impulsive force of their emotion, caused the amnesia in the other personality.[[38]] The same phenomena were observed in the case of B. C. A. As memory for the forgotten experiences in these instances returned as soon as the conflict ceased, conservation of them necessarily persisted during the amnesia.
Perhaps I may be permitted to digress here slightly to point out that this same (in principle) phenomenon may be effected experimentally by suggestion. The suggested idea which has the force of a volition or unexpressed wish, coming in conflict with the knowledge of previously familiar facts, inhibits or represses the reproduction in consciousness of this knowledge as memory. It is easy to prove, however, that this knowledge is conserved though it cannot be recalled. Thus, I give appropriate suggestions to B. C. A. in hypnosis that she shall be unable, when awake, to remember a certain unpleasant episode connected with a person named “August.” After being awakened she has complete amnesia, not only for the episode, but even for the name. The suppression of the memory of the episode carries with it by association the name of the person. In fact, the name itself has no meaning for her. When asked to give the names of the calendar months after mentioning “July” she hesitates, then gives “September” as the next. Even when the name “August” is mentioned to her it has no meaning and sounds like a word of a foreign language. The memory of the episode has become dormant so far as volitional recollection is concerned. It can, however, be recalled as a coconscious process through automatic writing, as in the preceding experiment, and then the word in all its meanings and associations is also awakened in the coconsciousness.
The same phenomenon may be observed clinically in transition types standing halfway between the amnesia following emotional episodes and that produced by external suggestion. Auto-suggestion may then be a factor in the mechanism, as in the following example: In a moment of discouragement and despair B. C. A., torn by an unsolved problem, said to herself after going to bed at night, “I shall go to sleep and I shall forget everything, my name and everything else.” Of course she did not intend or expect to forget literally her name, but she gave expression to a petulant despairing conditional wish which if fulfilled would be a solution to her problem; as much as if she said, “If I should forget who I am my troubles would be ended.” Nevertheless the auto-suggestion with its strong feeling tones worked for repression. The next day, when about to give her name by telephone, she discovered that she had forgotten it. On testing her later I found that she could not speak, write, or read her name. She could not even understandingly read the same word when used with a different signification, i.e., stone [her name, we will suppose, is Stone], nor the letters of the same. This amnesia persisted for three days until removed by my suggestion. That the lost knowledge was all the time conserved is further shown by the fact that during the amnesia the name was remembered in hypnosis and also reproduced by automatic writing.
In the epochal type of amnesia a person, perhaps after a shock, suddenly loses all memory for lost epochs, it may be for days and even for years of his preceding life. In the classical case of Mr. Hanna, studied by Boris Sidis, the amnesia was for his whole previous life, so that the subject was like a new-born child. It is easy to show, however, that the forgotten epoch is normally conserved by making use of the various methods of reproduction at our disposal. In the case of Hanna, Sidis was able through “hypnoidization” and suggestion to bring back memory pictures of the amnesic periods. “While the subject’s attention is thus distracted, events, names of persons, of places, sentences, phrases, whole paragraphs of books totally lapsed from memory, and in language the very words of which sounded bizarre to his ears and the meaning of which was to him inscrutable—all that flashed lightning-like on the patient’s mind. So successful was this method that on one occasion the patient was frightened by the flood of memories that rose suddenly from the obscure subconscious [unconscious] regions, deluged his mind, and were expressed aloud, only to be forgotten the next moment. To the patient himself it appeared as if another being took possession of his tongue.”[[39]]
In another class of cases of epochal amnesia known as fugues the subject, having forgotten his past life and controlled by fancied ideas, perhaps wanders away not knowing who he is or anything of the previous associations of his life. The “Lowell Case” of amnesia, which I had an opportunity to carefully observe and which later was more extensively studied for me by Dr. Coriat, may be instanced.[[40]] A woman suddenly left her home without apparent rhyme or reason. When later found she had lost all recollection of her name, her personality, her family, and her surroundings, and her identity was only accidentally discovered through the publication of her photograph in the newspaper. She then had almost complete amnesia for her previous life.
Another case, also studied by Dr. Coriat and the writer, was that of a policeman who suddenly deserted his official duty in Boston and went to New York, where he wandered about without knowledge of who he was, his name, his age, his occupation, indeed, as there is reason to believe, of his past life. When he came to himself three days later he found himself in a hospital with complete amnesia for the three days’ fugue. When I examined him some days later this amnesia still persisted but Dr. Coriat was able to recover memories of his vagrancy in New York showing that the experiences of this fugue were still conserved. It is hardly necessary to remind you that, of course, the memories of his normal life which during the fugue it might have been thought were lost were shown to have been conserved, as on “coming to himself” they were recovered. In the “Lowell Case” substantially similar conditions were found.
In continuous or anterograde amnesia the subject forgets every experience nearly as fast as it happens. The classical case of Mme. D., studied by Charcot and later more completely by Janet, is an example. The conservation of the forgotten experiences was demonstrated by these authors.
In multiple personality amnesia for large epochs in the subject’s life is quite generally a prominent feature. In one phase of personality there is no knowledge whatsoever of existence in another phase. Thus, for instance, all the experiences of BI and BIV, in the case of Miss B., were respectively unknown to the other. When, however, the change took place from one personality to the other, with accompanying amnesia, all the great mass of experiences of the one personality still remained organized and conserved during the cycle of the other’s existence. With the reversion to the first personality, whichever it might be, the previously formed experiences of that personality became capable of manifesting themselves as conscious memories. This conservation could also be shown, in this case, by the method of tapping the conserved memories and producing crystal visions or artificial hallucinations. Those who are familiar with the published account of the case will remember that BIV was in the habit at one time of acquiring knowledge of the amnesic periods of BI’s existence by “fixing” her mind and obtaining a visual picture of the latter’s acts. Likewise, it will be remembered that by crystal visions I was enabled to bring into consciousness a vision of the scene at the hospital which, through its emotional influence, caused the catastrophe of dissociation of personality, and also of the scene enacted by BI just preceding the awakening of BIV, of all of which BIV had no knowledge.[[41]] As with Mr. Hanna sometimes these memories instead of being complex pictures were scrappy—mere flashes in the pan. The same condition of conservation of the experiences of one personality during the existence of another obtained in the case of B. C. A. and numerous cases recorded in the literature. In this respect the condition is the same as that which obtains in hypnotic states and which I mentioned a few moments ago.