CHAPTER IV
STIMULATION, INHIBITION, ORGANIZING ENERGY, CHOICE
AND CONSCIOUSNESS
The Foundations of Personality | ||
4.
CHAPTER IV
STIMULATION, INHIBITION, ORGANIZING ENERGY, CHOICE
AND CONSCIOUSNESS
THERE are three fundamental factors in the relation of any organism to the environment and in the relation of the various parts of an organism to each other which we must now consider. To consider a living thing of any kind as something separate from the stimuli the world streams in on it, or to consider it as a real unit, is a mistake that falsifies most of the thinking of the world.
On us, as living things, the universe pours in stimuli of a few kinds. Or rather there are few kinds of stimuli we are specialized to receive and react to; there may be innumerable other kinds to which we cannot react because they do not reach us. The world for us is a collection of things that we see, hear, smell, taste and feel, but there may be vast reaches of things for which we have no avenues of approach,—completely unimaginable things because our images are built upon our senses.
To some of the stimuli the world pours in on us we must react properly or die. Certain "mechanisms'' with which we are equipped must respond to these stimuli or the forces of the world destroy us. A lion on the horizon must awaken flight, or concealment, or the modified fight reaction of using weapons; extreme cold or heat must start up impulses and reflexes leading away from their disintegrating effects. Food must,
The stimuli that thus pour in upon the individual, and to which he must react, must find an organism ready to respond in some way or other. A sleeping man naturally does not adjust himself to danger, nor does a paralyzed man fly. The most attractive female in the world causes no response in the very young male
The simplest response to any stimulus from the outer world is the reflex act. Theoretically a reflex act is dependent upon the interaction of a sensory surface, a sensory nerve cell, a motor nerve cell and a muscle, i. e., a receptive apparatus and a motor apparatus in such close union that the will and intelligence play no part. Thus if one puts his finger on a hot stove he withdraws it immediately, and such responses are present even in the decapitated frog and human for a short time. So if light streams in on the wide-open pupil of the eye, it contracts, grows smaller, without any effort of the will, and in fact entirely without the consciousness of the individual. Swallowing is a series of reflexes in a row, so that food in the back part of the mouth sets a reflex going that carries it beyond the epiglottis; another reflex carries it to the esophagus and then one reflex after the other transports the food the rest of the way. Except for the first effort of swallowing, the rest is entirely involuntary and even unconscious. Those readers who are interested would do well to read the work of Pavlow on the conditioned reflex, in which the great Russian physiologist builds
The simple reflex, immediate response to a stimulus, has only a limited field in human life or adult life. Sherrington points out in his notable book, "The Integrative Action of the Nervous System,'' that there is a play of the entire organism on each responding element, and there is also a competition throughout each pathway to action. Let us examine this a little closer.
A man is hungry, let us say; i. e., there arise from his gastro-intestinal tract and from the tissues stimuli which arouse motor mechanisms to action and the man seeks food. The need of the body arouses desire in the form of an organic sensation and this arouses mechanisms whose function is to satisfy that desire. Let us assume that he finds something that looks good and he is about to seize it when an odor, called disagreeable, assails his nostrils from the food, which stops him. Then there arises a competition for action between the desire for food and the visual stimulus, associated memories, etc., on the one hand, and the odor, the awakened fear, memories, disgust, etc., on the other hand. This struggle for action, for use of the mechanisms of action, is the struggling of choosing, one of the fundamental phenomena of life. In order for a choice to become manifest, what is known as inhibition must come into play; an impulse to action must be checked in order that an
This function of inhibition, then, delays, retards or prevents an action and is in one sense a higher function than the response to stimulation. Its main seat is the cerebrum, the "highest'' nervous tissue, whereas reflex and instinctive actions usually are in the vegetative nervous system, the spinal cord, the bulbar regions and the mid-brain, all of which are lower centers. Choice, which is intimately associated with inhibition, is par excellence a cerebral function and in general is associated with intense consciousness. The act of choosing brings to the circumstances the whole past history of the individual; it marshals his resources of judgment, intelligence, will, purposes and desires. In choice lies the fate of the personality, for it is basically related to habit formation. Further, in the dynamics of life a right, proper choice, an appropriate choice, opens wide the door of opportunity, whereas an unfortunate choice may commit one to the mercies of wrecking forces. Education should aim to teach proper choosing and then proper action.
The capacity for perceiving and responding to stimuli, for inhibiting or delaying action and for choosing,
But a naturalistic view of character must reject such a metaphysical entity, for one sees the organizing energy increase and diminish with the rest of character through health, age, environment, etc. Further, there is at work in all living things a similar something that organizes the action of the humblest bit of protoplasm. This organizing energy of character will be, for us, that something inherent in all life which tends to individualize each living thing. It is as if all life were originally of one piece and then, spreading itself throughout the world, it tended to differentiate and develop (according to the Spencerian formula) into genera, species, groups and individuals. This organizing energy works up the experiences of the individual so that new formulæ for action develop, so that what is experienced becomes the basis of future reaction.
It must be remembered that the world we live in has its great habits. Night follows day in a cycle that never fails, the seasons are repeated each year, and there is a periodicity in the lives of plants and animals that is manifested in growth, nutrition, mating and resting. Things happen again and again, though in slightly altered form, and our desires, satisfied now, soon repeat
Moreover, the organizing energy seems often to be at work when consciousness itself is at rest, as in sleep. Often enough a man debates and debates on lines of conduct and wakes up with his problem solved. Or he works hard to learn and goes to bed discouraged, because the matter is a jumble, and wakes up in the morning with an orderly and useful arrangement of the facts. A writer seeks to find the proper opening,—and gives up in a frenzy of despair. He is perhaps walking or driving when suddenly he lifts his head as one does who is listening to a longed-for voice, and in himself he finds the phrases that he longs for. Something within has set itself, so it seems, the task of bringing the right associations into consciousness. What we call quickness of mind, energy of mind, is largely this function.
We are now ready to face certain developments of these three main factors, viz., the response to stimuli; choice and inhibition, and the organizing energy. Largely we might classify people according to the type of vigor of their reactions to stimuli, the quality and vigor of choice and of inhibition, and the quality and vigor of the organizing energy. We note that there are people who have, as it were, exquisitely sensitive feelers for the stimuli of one kind or another and who react vigorously, perhaps excessively; that there are others of a duller, less reactive nature, largely because they are stimuli-proof. Others are under-inhibited, follow desire or outer stimulus without heed, without a brake; others are over-inhibited, too cautious, too full of doubt, unable to choose the reaction that seems appropriate. The organizing energy of some is low; they never seem to unify their experiences into a code of life and living; they are like a string of beads loosely strung together
Psychologists rarely concern themselves to any extent with these matters; they deal mainly with their out-growths,—emotions, instinct, intelligence and will. We are at once beset with difficulties which are resolved mainly by ignoring them. In such a book as this we are not concerned with the fundamental nature of these divisions of the mental life, we must omit such questions as the relation of instinct to racial habit, or the evolution of instinct from habit, if that is really its origin. Again I must repeat that we shall deal with these as organic, as arising in the sensitized individual as a result of environmental forces, as manifestations of a life which is as yet—and perhaps always will be— mysterious to us. We shall best consider these manifestations of mental activity as an interplay of the reactions of stimulation, inhibition, choice, organizing energy, and not as separate and totally different matters. We shall see that probably emotion is one aspect of reaction to the world, while instinct is merely another aspect; that intelligence is a cerebral shift of instinct, and that will is no unity but the energy of instincts and purposes.
Before we go farther we must squarely face a problem
I shall take a very simple view of consciousness,[5] simply because I shall deliberately dodge the great difficulties. Consciousness is the result of the activities of a group of more or less permanently excited areas of the brain—areas having to do with positions of the head, eyes and shoulders; areas having to do with vision, hearing and smell; areas having to do with speech,— these constituting extremely mobile, extremely active
Since consciousness is most intense when the new or unfamiliar is seen, heard, felt or attempted, we may assume it has a chief function in acquainting the individual with the new and unfamiliar and in the establishment of habitual reactions, We are extraordinarily
A moderate constant sensation tends to disappear from consciousness, as when we keep our hand in warm water. It then takes a certain increase of the stimulus to keep the sensation from lapsing out of consciousness. This lapsing out of consciousness of the steady stimulus, in its ramifications, is responsible for a good deal of the activity of man, since sensation is a goal of effort.[6] Under emotion we become aware of two sets of things,— the reaction of our body in its sum total of pleasure or the reverse, and second the object that sets up this reaction. Consciousness fastens itself on the body and on the world, and the bodily reaction becomes a guide for future action. Extreme bodily reactions are painful and may result in the abolishing of consciousness.
We assume that consciousness is organic, though we concede that it may be true that it is borrowed from a
However widely we spread the function of consciousness and its domain, we still leave a large field of activities untouched. And so we come to the conception of the subconsciousness. There are two prevailing sets of opinions concerning the subconscious.
The first is quite matter-of-fact. It states that the movements and activities of a large part of the body are outside of the realm of consciousness, such as the
In addition, these activities, which are so all-important, determine the basic conduct by arousing the basic appetites and desires of the individual. It is the change in the gastro-intestinal tract and in the tissues of the body that starts up the hunger feeling and the impulses which prompt men to seek food; in other words, this type of cœnæsthesia has set going all the physical and mental activities relating to food; it is the basic impulse behind agriculture and stock raising, as well as energizing work activities of all kinds. It is the tension in the seminal vessels of the male that wakes up his passion, if it is not the sole source of that passion. Sex desire in the adult male has many elements in it, not pertinent at present, but the cœnæsthetic influence of the physical structures is its starting point. In men as well as women there is a cycle of desire, with height due to physical tension and abyss following the discharge or disappearance of tension, that profoundly influences life and conduct. Here the sympathetic nervous system and the internal secretion of the genital glands awaken into sexual activity brain, spinal cord and muscles, so that the individual seeks a mate, plunges into marriage and directs his conduct, conscious of taste and desire, but largely unconscious of the physical condition that is impelling him on. In this sense the subconscious activities dominate in life, because the functions of nutrition and reproduction are largely unconscious in their origin, but there is no organized, plotting subconsciousness at work.
Once a thing is experienced, it is stored in memory. What is the basis and position of a memory when we are not conscious of it, when our conscious minds are busy with other matters? What happens when a desire is repressed, inhibited into inaction; when consciousness
Sigmund Freud and his followers have made definite answers to the foregoing, answers that are incorporated in a doctrine called Freudianism. Freud is an Austrian Jew, a physician, and one that soon specialized in nervous and mental diseases. Early in his career he did some excellent work in the study of the paralysis of childhood (infantile hemiplegia), but his attention and that of an older colleague, Breuer, were soon drawn (as has occurred to almost every neurologist) to the manifestations of that extraordinary disease, hysteria. Hysteria has played so important a rôle in human history, and Freud's ideas are permeating so deeply into modern thought that I deem it advisable to devote a chapter to them.
I place in quotations naturally because it is difficult to know what is "natural'' and what is cultural. In the widest sense everything is natural; in the narrowest very few things are natural. Cooked food, clothing, houses, marriages, education, etc., are not found in a state of nature, any more than clocks and plays by Ibsen are. Our judgment as to what is good and bad is mainly instinctive leaning directed or smothered by education.
Pavlow is one of the scientists who regard all mental life as built up out of reflexes. The immediate reflex is only one variety; thought, emotion, etc., are merely reflexes placed end to end. Pavlow divides action into two trends, one due to an unconditioned reflex, of innate structure, and the other a modified or conditioned reflex which arises because some stimulus has become associated with the reflex act. Thus saliva dripping from a dog's mouth at the smell of food is an unconditioned reflex; if a bell is heard at the same time the food is smelled then in the course of time the saliva flows at the sound of the bell alone,—a conditioned reflex. A very complex system has been built up of this kind of facts, which I have criticized elsewhere.
Roux, the great French biologist, has shown that each tissue and each cell competes with the other tissues and the other cells. The organism, though it reaches a practical working unity as viewed by consciousness, is nevertheless no entity; it is a collection, an aggregate of living cells which are organized on a coöperation basis just as men are, but maintain individuality and competition nevertheless.
For discussion of consciousness read Berkeley, Locke, Hume, Spencer, Lotze, Moyan, James, Wundt, Münsterberg and every other philosopher and psychologist. I have not attempted to discuss the matter from the philosopher's point of view for the very obvious reason that I am no philosopher.
The physiologists speak of this phenomenon under the heading of the Weber-Fechner law, after the two physiologists who gave it promimence.{sic} James pokes a good deal of fun at the "law,'' which is expressed mathematically. Perhaps the mathematics should have been eliminated as too "scientific'' for our present attainment, but it does remain true that it is not the actual stimulus increase that is important in sensation or perception, but the relative stimulus increase. This is behind all of "getting used to things''; it removes the pain from humiliation and also the novelty from joy. It is the reason behind all of the searching for novelty and excitement.
Even if it were true that consciousness is the only reality, nobody really believes it in that nobody acts as if it were true. Conversely, everybody acts as if trees, rocks, and people were realities; as if fatigue, sickness, age, etc., affected consciousness. That is why, in this book, we are discarding as irrelevant the "ultimate'' truth concerning consciousness. My humble belief is that the ultimate truth in this matter will never concern us because we shall never know it.
This is not the place to describe the vegetative nervous system. (It was formerly called the sympathetic nervous system, but this term is now limited to one part of this system, and the term autonomic to another part, although some writers still use the term sympathetic for the whole, and others [the English] the term autonomic for the whole.) This system is the nervous mechanism of organic life, regulating heart, lungs, blood vessels, intestines, sex organs, acting together with endocrines, etc. A huge amount of work has been done of late years on this system and we know definitely that it stimulates, inhibits and regulates these organs, and also that it records their activities. We are commencing to believe that this system is fully as important, in mental life, as the brain. See Langley, Schaeffer, Higier, etc.
CHAPTER IV
STIMULATION, INHIBITION, ORGANIZING ENERGY, CHOICE
AND CONSCIOUSNESS
The Foundations of Personality | ||