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Effects of Sleep Deprivation on Behaviour, Subsequent Sleep, and Dreaming

Department of Psychological Medicine, University of Edinburgh

ABSTRACT

The EEG and eye-movements during nocturnal sleep were recorded from six males on four base-line nights and four recovery nights following 108 hours of sleep deprivation.

On the first recovery night there was a significant increase in the mean percentage of total sleep time during which EEG signs of deep sleep were present, associated with a significant decrease in the mean percentage of total sleep time spent in dreaming (determined by duration of rapid eye movement periods) on comparison with the base-line nights.

On the second recovery night there was a significant increase in mean dream time percentage compared with that on the base-line nights.

The results are discussed in relation to theories of a "need" for dreaming.

Hallucinations, paranoid delusions and other abnormal behaviour during sleep deprivation are described.