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The Origins of Consciousness in the Breakdown of the Bicameral Mind
Author: Julian Jaynes
Publisher: University of Toronto Press (1978)
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The Causes of Consciousness AN OLD SUMERIAN PROVERB has been translated as “Act promptly, make your god happy.”1 If we forget for a moment that these rich English words are but a probing approximation of some more unknowable Sumerian thing, we may say that this curious exaction arches over into our subjective mentality as saying, “Don’t think: let there be no time space between hearing your bicameral voice and doing what it tells you.” This was fine in a stable hierarchical organization, where the voices were the always correct and essential parts of that hierarchy, where the divine orders of life were trussed and girdered with unversatile ritual, untouched by major social disturbance. But the second millennium B.C. was not to last that way. Wars, catastrophes, national migrations became its central themes. Chaos darkened the holy brightnesses of the unconscious world. Hierarchies crumpled. And between the act and its divine source came the shadow, the pause that profaned, the dreadful loosening that made the gods unhappy, recriminatory, jealous. Until, finally, the screening off of their tyranny was effected by the invention on the basis of language of an analog space with an analog ‘I’. The careful elaborate structures of the bicameral mind had been shaken into consciousness.


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If we are correct in assuming that schizophrenic hallucinations are similar to the guidances of gods in antiquity, then there should be some common physiological instigation in both instances. This, I suggest, is simply stress. In normal people, as we have mentioned, the stress threshold for release of hallucinations is extremely high ; most of us need to be over our heads in trouble before we would hear voices. But in psychosis-prone persons, the threshold is somewhat lower; as in the girl I described, only anxious waiting in a parked car was necessary. This is caused, I think, by the buildup in the blood of breakdown products of stress-produced adrenalin which the individual is, for genetical reasons, unable to pass through the kidneys as fast as a normal person. During the eras of the bicameral mind, we may suppose that the stress threshold for hallucinations was much, much lower than in either normal people or schizophrenics today. The only stress necessary was that which occurs when a change in behavior is necessary because of some novelty in a situation. Anything that could not be dealt with on the basis of habit, any conflict between work and fatigue, between attack and flight, any choice between whom to obey or what to do, anything that required any decision at all was sufficient to cause an auditory hallucination. It has now been clearly established that decision-making (and I would like to remove every trace of conscious connotation from the word 'decision') is precisely what stress is. If rats have to 94 The Mind of Man cross an electric grid each time they wish to get food and water, such rats develop ulcers.11 Just shocking the rats does not do this to them. There has to be the pause of conflict or the decision-making stress of whether to cross a grid or not to produce this effect. If two monkeys are placed in harnesses, in such a way that one of the monkeys can press a bar at least once every twenty seconds to avoid a periodic shock to both monkeys' feet, within three or four weeks the decision-making monkey will have ulcers, while the other, equally shocked monkey will not.12 It is the pause of unknowingness that is important. For if the experiment is so arranged that an animal can make an effective response and receive immediate feedback of his success, executive ulcers, as they are often called, do not occur.13


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If we are correct in assuming that schizophrenic hallunications are similar to the guidances of gods in antiquity, then there should be some common physiological instigation in both instances. This, I suggest, is simply stress. In normal people, as we have mentioned, the stress threshold for release of hallucinations is extremely high; most of us need to be oever our heads in trouble before we would hear voices. But in psychosis-prone persons, the threshold is somewhat lower; as in the girl I described, only anxious waiting in a parked car was necessary. This is caused, I think, by the buildup in the blood of a breakdown products of stress-produced adrenalin which the individual is, for gentical reasons, unable to pass through the kidneys as fast as a normal person.\n\n During the eras of the bicameral mind, we may suppose that the stress threshold for hallucinations was much, much lower than in either normal people or schizophrenics today. The only stress necessary was that which occurs when a change in behavior is necessary becuase of some novelty in a situation. Anything that could not be dealt with on the basis of habit, any conflict between work and fatigue, between attack and flight, any choice between whom to obey or what to do, anything that required any decision at all was sufficient to cause an auditory hallucination.\n\n It has now been clearly established that decision-making (and I would like to remove every trace of conscious connotation from the word 'decision') is precisely what stress is. If rats have to cross an electric grid each time they wish to get food and water, such rats develop ulcers*. Just shocking the rats does not do this to them. There has to be the pause of conflict or the decision-making stress of whether to cross a grid or not to produce this effect. If two monkeys are placed in harnesses, in such a way that one of the monkeys can press a bar at least once every twenty seconds to avoid a periodic shock to both monkeys' feet, within three or four weeks the decision-making monkey will have ulcers, while the other, equally shocked monkey will not*. It is the pause of unknowingness that is important. For if the experiment is so arranged that an animal can make an effective response and receive immediate feedback of his success, executive ulcers, as there are often called, do not occur*.'\n\n *W.L. Sawrey and J.D. Weisz, 'An experimental method of producing gastic ulcers,' Journal of Comparative and Physiological Psychology, 1956, 49:269-270.\n **J.V. Brady, R.W. Porter, D.G. Conrad, and J.W. Mason, 'Avoidance behavior and the development of gastro-duodenal ulcers,' Journal of the Experimental Analysis of Behavior, 1958, I:69-72.\n **J.M. Weiss, 'Psychological Factors in Stress and Disease,' Scientific American, 1972, 226:106.\n\n\n