Hypnotism.--The phenomenon of hypnotism was doubtless known to the Oriental nations, and even to the Greeks, Romans, and Egyptians, as well as to other nations since the downfall of the Roman Empire. "The fakirs of India, the musicians of Persia, the oracles of Greece, the seers of Rome, the priests and priestesses of Egypt, the monastic recluses of the Middle Ages, the ecstatics of the seventeenth and early part of the eighteenth century exhibited many symptoms that were, and are still, attributed by religious enthusiasts to supernatural agencies, but which are explainable by what we know of hypnotism. The Hesychasts of Mount Athos who remained motionless for days with their gaze directed steadily to the navel; the Taskodrugites who remained statuesque for a long period with the finger applied to the nose; the Jogins who could hibernate at will; the Dandins of India who became cataleptoid by 12,000 repetitions of the sacred word Om; St.
Simeon Stylites who, perched on a lofty pillar, preserved an attitude of saint-like withdrawal from earthly things for days;and even Socrates, of whom it was said that he would stand for hours motionless and wordless--all these are probable instances of autohypnotism." (Gray.)Hypnotism is spoken of as a morbid mental state artificially produced, and characterized by perversion or suspension of consciousness, and abeyance of volition; a condition of suggestibility leads the patient to yield readily to commands of external sense-impressions, and there is intense concentration of the mental faculties upon some idea or feeling. There are several methods of inducing hypnosis, one of which is to give particular direction to the subject's imagination by concentrating the attention upon an arbitrary point, or by raising an image of the hypnotic state in the patient's mind. The latter is most readily induced by speech. Faria formerly strained the attention of the subject as much as possible, and suddenly called out, "Sleep!"This method has been used by others. Physical methods consist of certain stimuli of sight, hearing, and touch. Taste and smell have generally given negative results. Fixation of the gaze has been the most successful, but the ticking of a watch has been used. According to Moll, among uncivilized races particular instruments are used to produce similar states, for example, the magic drum's sound among the Lapps, or among other races the monotony of rhythm in song, etc. Instead of these continuous, monotonous, weak stimulations of the senses, we find also that sudden and violent ones are made use of--for example in the Salpetriere, the field of Charcot's work, the loud noise of a gong, or a sudden ray of light; however, it is more than doubtful whether these sudden, strong, physical stimuli, without any mental stimuli, can induce hypnosis. Perhaps we have to do here with states not far removed from paralysis from fright. The sense of touch is also brought into play in hypnosis; Richet set great value on the so-called mesmeric strokes or passes. It is often stated that touches on the forehead induce a sleepy state in many persons. Hypnotism is practiced by stimulation of the muscular sense, such as cradle-rocking, used to send little children to sleep. Similar states are said to be produced among uncivilized people by violent whirling or dancing movements; the movements are, however, accompanied by music and other mental excitations.
Hypnosis is spoken of by Huc and Hellwald of the Buddhist convents in Thibet; and Sperling, who has had a particularly wide experience in the field of hypnotism, and whose opinion is of particular value, says that he has seen dervishes in Constantinople who, from the expression of their eyes and their whole appearance, as well as from peculiar postures they maintain for a long time, impressed him as being in a hypnotic state. The state may have been induced by singing and uniform whirling motions. Hildebrandt, Jacolliot, Fischer, Hellwald, and other trustworthy witnesses and authors tell us strange things about the fakirs of India, which set any attempt at explanation on the basis of our present scientific knowledge at defiance--that is, if we decline to accept them as mere juggler's tricks. Hypnotism seems to be the only explanation. It is a well known fact that both wild and domestic beasts can be hypnotized and the success of some of the animal-tamers is due to this fact. In hypnotism we see a probable explanation for the faith-cures which have extended over many centuries, and have their analogy in the supposed therapeutic powers of the Saints.
The medicolegal aspect of hypnotism may be called in to answer whether crime may be committed at suggestion. Such examples have already been before the public in the recent trial of the Parisian strangler, Eyraud. It was claimed that his accomplice in the crime, Gabrielle Bompard, had been hypnotized. Bernheim narrates a case of outrage effected in the hypnotic condition, which was brought to light by a trial in the South of France.
As to the therapeutic value of hypnotism, with the exception of some minor benefits in hysteric cases and in insomnia, the authors must confess that its use in Medicine seems very limited.
African sleep-sickness is a peculiar disorder, apparently infectious in character, which occurs among the negroes of the western coast of Africa. It has been transported to other regions but is endemic in Africa. According to Dana it begins gradually with malaise and headache. Soon there is drowsiness after meals which increases until the patient is nearly all the time in a stupor. When awake he is dull and apathetic. There is no fever;the temperature may be subnormal. The pulse, too, is not rapid, the skin is dry, the tongue moist but coated, the bowels regular.