Brave New World Revisited - Aldous Huxley [38]
In this context an article by Theodore X. Barber, “Sleep and Hypnosis,” which appeared in The Journal of Clinical and Experimental Hypnosis for October, 1956, is most enlightening. Mr. Barber points out that there is a significant difference between light sleep and deep sleep. In deep sleep the electroencephalograph records no alpha waves; in light sleep alpha waves make their appearance. In this respect light sleep is closer to the waking and hypnotic states (in both of which alpha waves are present) than it is to deep sleep. A loud noise will cause a person in deep sleep to awaken. A less violent stimulus will not arouse him, but will cause the reappearance of alpha waves. Deep sleep has given place for the time being to light sleep.
A person in deep sleep is unsuggestible. But when subjects in light sleep are given suggestions, they will respond to them, Mr. Barber found, in the same way that they respond to suggestions when in the hypnotic trance.
Many of the earlier investigators of hypnotism made similar experiments. In his classical History, Practice and Theory of Hypnotism, first published in 1903, Milne Branwell records that “many authorities claim to have changed natural sleep into hypnotic sleep. According to Wetterstrand, it is often very easy to put oneself en rapport with sleeping persons, especially children…. Wetterstrand thinks this method of inducing hypnosis of much practical value and claims to have often used it successfully.” Bramwell cites many other experienced hypnotists (including such eminent authorities as Bernheim, Moll and Forel) to the same effect. Today an experimenter would not speak of “changing natural into hypnotic sleep.” All he is prepared to say is that light sleep (as opposed to deep sleep without alpha waves) is a state in which many subjects will accept suggestions as readily as they do when under hypnosis. For example, after being told, when lightly asleep, that they will wake up in a little while, feeling extremely thirsty, many subjects will duly wake up with a dry throat and a craving for water. The cortex may be too inactive to think straight; but it is alert enough to respond to suggestions and to pass them on to the autonomic nervous system.
As we have already seen, the well-known Swedish physician and experimenter, Wetterstrand, was especially successful in the hypnotic treatment of sleeping children. In our own day Wetterstrand’s methods are followed by a number of pediatricians, who instruct young mothers in the art of giving helpful suggestions to their children during the hours of light sleep. By this kind of hypnopaedia children can be cured of bed wetting and nail biting, can be prepared to go into surgery without apprehension, can be given confidence and reassurance when, for any reason, the circumstances of their life have become distressing. I myself have seen remarkable results achieved by the therapeutic sleep-teaching of small children. Comparable results could probably be achieved with many adults.
For a would-be dictator, the moral of all this is plain. Under proper conditions, hypnopaedia actually works — works, it would seem, about as well as hypnosis. Most of the things that can be done with and to a person in hypnotic trance can be done with and to a person in light sleep. Verbal suggestions can be passed through the somnolent cortex to the midbrain, the brain stem and the autonomic nervous system. If these suggestions are well