One of the most important factors for therapeusis in the sense of the amelioration of defective motor conditions, the relief of disturbing sensory affections and the restoration of or compensation for defective functions of various kinds is training. By this is meant the training of the power of attention and its concentration in such a way that defects are overcome. There are many examples of almost marvelous improvement of function brought about in this way that are familiar, but it is well to recall some of them here in order to illustrate the uses to which this therapeutic mode may be applied. A blind man is able to read by means of his finger tips, and to recognize raised letters that seem quite beyond the possibility of tactile recognition by {214} ordinary individuals gifted with all their senses. The peculiar skill is simply due to the individual being able by concentration of attention upon slight variations in touch sensation to recognize even minute differences readily and so read raised letters with comparative ease and rapidity.

Over and over again it has been shown that neither the congenitally blind nor those whose vision has become defective have any better sense of touch than the average person. With an esthesiometer, their power to recognize the distance between the points of a calipers is shown to be no better than that of an ordinarily sensitive individual. This is illustrated in other ways. Certain blind persons, even those born blind, are known to be able to distinguish colors more or less accurately, that is, at least the three primary colors. Their power to do this is consequent upon a faculty of recognizing differences in heat absorption. The ordinary seeing person going into a room in the dark recognizes at once the difference between a pencil and a piece of metal of the same shape and size by its weight and the greater tendency of the metal to feel colder. When we are not sure whether a pillar in a structure is of stone or an imitation, we determine this by touch, and the fact that stone absorbs heat rapidly while wood and other imitations of stone do not. It is the same faculty for distinguishing specific heat that enables certain blind people to recognize colors. If pieces of cloth of different colors are put over snow when the sun is shining on them, it will be found that black absorbs much more heat than the colored cloths, or white, and consequently that the snow melts faster beneath the black. After black comes red, then green, then blue. It is this difference in the power to absorb heat that the blind recognize and thus distinguish colors after long patient training of themselves.

Obstacle Sense.—An example of the value of training is the so-called obstacle sense which has been rather carefully studied in recent years. By means of it blind people are able to avoid larger obstacles and to know when they are passing an open door or window on a corridor or a building alongside a street. Blind children have been known to play in a garden where there were trees and other obstacles and carefully avoid them even while moving rather rapidly. This sense is disturbed whenever there is loud noise in the vicinity. It is not very active and yet it is of considerable value to the blind. Its disturbance by noise would seem to indicate that it is due to some sense faculty in the tympanum, or ear drum. It exists in everybody, but remains quite undeveloped except in those who need it and therefore learn to make use of it.

Touch and Sight.—The triumph of training is to be seen in the cases of those who are born blind and deaf and who yet are taught to understand through lip and throat reading by the tips of the fingers and taught to talk by being shown patiently the method by which others accomplish it, though the only avenue to their brain is the dull sense of touch which means so little for the ordinary individual. The cases of Laura Bridgeman and of Helen Keller illustrate how a sense that is usually quite neglected can be made to supply the place of both the eyes and the ears by patient, persistent training. Lip reading by sight is, of course, a very interesting example of the same principle that can be learned by anyone who has good sight in a comparatively short time. There are compensations of this kind and powers of development latent in every sense and function of the body that can be {215} employed to make life interesting and to restore usefulness after nearly every form of lesion or defect. Practically all of this compensatory power is mental, hence its place in psychotherapy. We do not increase the power of the sense but by concentration of attention the mind is rendered capable of obtaining definite information from sensory stimuli that are present in every person but that are ordinarily neglected.

Hearing.—One of the most surprising instances of the value of training for cases in which favorable results seemed quite out of the question, is Urbantschitsch's method of training the deaf to hear. After investigating it personally I reported it in the International Clinics. [Footnote 24] Patients who could hear but very little, indeed, only the loudest noises, were trained by means of loud shouting and the hearing of loud notes gradually to catch sounds more and more easily until not infrequently they could hear rather well. Sometimes even those who were thought to be absolutely deaf to sound were found to be able to hear very loud sounds and then it was invariably discovered that by practice they could be made to hear much more. The secret of the success consisted not in any increase in the power to hear, but entirely in training the attention to recognize and differentiate sounds so that what seemed at first a confused murmur gradually became intelligible. It is exactly the same process as that by which a man learns to read with his fingers. He is not able to differentiate the letters but after a time it is possible to do so without difficulty.

[Footnote 24: Lippincott & Co., Phila., Vol. IV, 8th series, 1899.]

Equilibrium.—There are typical examples of almost as striking increase of muscle sensation, or rather of ability to distinguish minute differences in muscular sensation, noted in those who train this faculty carefully. Acrobats succeed in developing wonderful control over muscles and marvelous response to slight disturbance of equilibrium. The ordinary individual has comparatively small balancing powers, but the slack-rope performer seems almost to defy the laws of gravity, because he has learned so to coordinate all muscular action as to enable him to maintain his balance. He has trained himself to distinguish every variety of message from his semicircular canals. Of itself neither of these senses gives us very much information, indeed, only as much as we ask for from it, but when we pay careful attention to the minute details of the information that it imparts, we are able to use it to great advantage.

Muscle Training.—It is this power of training to enable us to appreciate minute sensations that forms the basis of the Frenkel treatment of tabes. For the proper guidance of the muscles the muscular sense is all-important, though ordinarily we are quite unconscious of the information it conveys. This is seriously disturbed by the degeneration in tabes. The patient can, however, be taught to use even the slight amount of it that remains to great advantage or else to avail himself of some other compensatory sensations which will enable him to guide his muscles in various motions much better than before.

This same faculty can probably be employed in many other conditions. Frenkel has shown that it is applicable in paralysis agitans and markedly relieves the rigidity that is so annoying a symptom. It gives these patients something to occupy their minds, too, which means a great deal for their {216} general condition, for occupation of attention saves them from neurotic disturbance of themselves.

Sufferers from infantile paralysis can be taught to do many things with their weakened muscles that seem to be quite impossible to them. It requires patience to get results, but they mean so much that the efforts are well worth while. After cerebral incidents, sometimes actual apoplexies, sometimes injuries, occasionally serious effusions due to kidney diseases, there may be disturbance of motor functions. It is surprising how often training will enable the sufferer to use his muscles much better in these cases than at first seemed possible. I have seen a man who had lost most of his power for writing after a cerebral incident regain it as a consequence of being taught to write from his shoulder, instead of from the forearm as had been his custom.

Heart Training.—In recent years we have learned that training is not only good for the external muscles and enables them to do more work without discomfort, but that it is particularly beneficial to the heart muscle whenever that organ can respond to it favorably. At all of the heart cures in recent years, exercise of some kind or another is one of the important features and the failure of physicians generally to secure as good results while pursuing all the other methods followed at these cures, seems to show that exercise was probably the most important factor. Nauheim is the typical heart cure and there, besides the resisted movements in the bath, there is the graduated exercise of the walks around the town, all of which, owing to the situation, lead up hill. Walking up hill, even though it be a gradual ascent, might seem to be the worst possible exercise for heart patients, yet it proves eminently beneficial.

Respiratory Training.—Shortness of breath is often a bothersome symptom, especially for stout people, and prevents them from taking necessary exercise. When it cannot be traced directly to some affection of the heart or of the circulatory apparatus, it is usually due to lack of exercise. Much can be done for it by deliberate training. In the modern time, with elevators so common, people seldom have to walk up-stairs, and consequently one of the modes of exercise that was particularly likely to furnish some training in deep breathing is absent. Any one who has seen the shallow breathing of many of the patients who come to Nauheim and how much it has improved by the gradually increased walks up the hills around the valley, will appreciate how much training in deep breathing means. This exercise of the diaphragm will often give benefit besides in making the bowels more regular, and in getting rid of the accumulation of fat in the abdomen, which is one of the mechanical causes of the interference with the diaphragm and consequent shortness of breath.

Training the Appetite.—Just as training may be used for the sensory and motor systems that are external, so it may also be used for many internal functions analogous to these. There are a great many people who eat too little. They are the nervous, irritable persons with no fund of reserve energy to draw on when anything happens, and who are in their years before middle life likely to be the victims of infectious disease. They suffer much from lack of proper covering in the winter time and from a certain protection that is afforded to the nervous system generally by being up to weight. Often their under-weight is a life-story, and occasionally it is a family matter. When {217} they suffer from neurotic symptoms a gain in weight nearly always does them good. They complain that when they increase their diet they have uncomfortable feelings. This is only what is to be expected, since the muscularis of their stomach—much more important than its secretory function—has not been accustomed to as much exercise as is now being demanded of it.

On the other hand, for those who are over-weight, training in eating less is the one important therapeutic factor. If their diet is cut down suddenly, they soon become discouraged. If there is a gradual reduction of food quantities, variety being allowed, so that they may eat practically everything they have been eating before, the system gradually accommodates itself to less and less food. This is the only sensible way of bringing about reduction in weight. It requires constant attention over a long period, but it can be done with excellent success.

In the same way the bowels may be trained to perform their work regularly. Habit means probably more with them than any other factor. Our digestive tract, however, is largely dependent on habit. We get hungry three times a day or twice a day, according to the custom that we have established. Countries differ radically in the matter, and nearly always, when a man goes from one country to another in early years, he changes to the habits of the new country, though if he comes after middle age he usually clings to those that he is used to.

Training to Stand Pain.—There are many painful conditions, especially involving the muscles in the neighborhood of joints, that are worse on rainy days and are spoken of as rheumatism, that can be very much improved by training in the use of muscles. As men grow older and gain in weight, the lack of exercise in their sedentary lives incapacitates their muscles for activities of many kinds. The consequence is that where most strain is put upon them, in the neighborhood of joints, they readily become tender and painful. It is this class of cases particularly that is benefited by irregular practitioners of all kinds. Mental healing, osteopathy, Eddyism, the many liniments, rubbings and manipulations prove beneficial. What is needed is training in the use of muscles so as to enable them to do the work that is required of them without discomforting reaction. This is particularly true for the leg and foot muscles. Exercises that strengthen the muscles of the calf and of the thigh, and particularly such as require free movement of the foot, are almost sure to relieve these patients of many annoying symptoms. Pains around the ankles and in the knee and hip, worse in rainy weather, disappear as a consequence of such gradually increased use of these muscles as gives them increased nutrition and power. This subject is discussed more fully under Foot Troubles and Painful Conditions of the Knee.

There may be a training in bearing discomfort which is of great value to over-sensitive patients. Some nervous patients seem to suffer merely from their ordinary physiological functions. These are the patients who abuse the drugs that are supposed to bring relief. There is just one mode of treatment that is successful with them: they must be told to bear their discomfort for a while without seeking drug relief, but always securing freedom from discomfort by means of attention to other things, until gradually they have succeeded in diverting their minds from the concentration of attention on their functions which is causing their disturbance. The whole programme {218} need not be outlined to them or they will perhaps have a revulsion of feeling against it that will make its accomplishment impossible. They can, however, be made to stand their discomforts for a time with the promise that it is for the best, since there will be eventually an improvement.

Intellectual Faculties.—Nearly every one of our faculties can be trained to do much better work than we have any idea of if we only are willing to take the trouble and give the attention. I have often shown people who came complaining of loss of memory that if they wanted to train themselves to remember they could do so. The memory probably cannot be bettered any more than can the sense of touch in the blind man, but by attention to minute details, in the concentration of the mind on certain subjects, it can accomplish results that seemed quite impossible before. All systems of improving the memory are founded on this method of concentrating attention on what one wishes to remember and connecting it with other things that we know by experience are readily remembered.