Letter | Published:

‘Dream Time’ in Hallucinating and Non-hallucinating Schizophrenic Patients

Nature volume 199, pages 11181119 (14 September 1963) | Download Citation



OBSERVERS of human behaviour have long commented on the similarities between the hallucinations of madness and the normal, universal hallucinations of dreaming1. Some have postulated that the two kinds of hallucinations share a common mechanism and that a derangement of this mechanism occurs in psychosis. If this were so, one might expect derangement of the mechanism to be present in sleep as well as waking, with a resultant alteration of the amount of dreaming; unfortunately, present theories (whether physiological2 or psychological3) do not explicitly predict the direction of such changes. However, the discoveries of Aserinsky, Dement and Kleitman now permit an empirical approach to this problem. These investigators have demonstrated that in both normal and schizophrenic subjects the low-voltage fast electroencephalogram (EEG) pattern of sleep accompanied by rapid eye movements (REM) is highly correlated with the subjective experience commonly described as dreaming4. The present study represents an application of their methods to the estimation of dream time in hallucinating and non-hallucinating schizophrenic subjects.

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  1. 1.

    , in The Basic Works of Aristotle, edit. by McKeon, R., 619 (Random House, New York, 1941). Also see literature reviewed by , The Interpretation of Dreams, trans. , 88 (Allen and Unwin, London, 1954), and by , in Hallucinations, edit. by West, L. J., 1 (Grune and Stratton, New York, 1962).

  2. 2.

    Theories of the type advanced by , in Selected Writings of Hughlings Jackson, edit. by Taylor, J., Holmes, G., and Walshe, F. M. R., 2, 25 (Basic Books, New York, 1958), and recently reformulated in light of the findings of modern neurophysiology by Evarts, E. V., op. cit, 4.

  3. 3.

    , Collected Papers, trans. Riviere, J., 4, 137 (Hogarth Press, London, 1953).

  4. 4.

    , and , Fed. Proc., 12, 6 (1953); Science, 118, 273 (1953); J. App. Physiol., 8, 1 (1955). , J. Nerv. Ment. Dis., 122, 263 (1955). , and , EEG Clin. Neurophysiol., 9, 673 (1957).

  5. 5.

    , paper presented at the annual meeting, Assoc. Psychophysiol. Study of Sleep, Chicago (March 1962).

  6. 6.

    , and , op. cit, 675.

  7. 7.

    , , and , J. Exp. Psychol., 21, 127 (1937).

  8. 8.

    , Nonparametric Statistics for the Behavioral Sciences, 116 (McGraw-Hill Book Co., Inc., New York, 1956).

  9. 9.

    , , , and , paper presented at the annual meeting, Amer. Psychiat. Assoc., St. Louis (May 1963); Comprehen. Psychiat. (in the press).

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  1. National Institute of Mental Health, Bethesda 14, Maryland.



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