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Sleep and Time Zone ChangesA Study in Acute Sleep Reversal
John I. Evans, MD;
George A. Christie, MD;
Stuart A. Lewis, PhD;
John Daly, MB, MRCPath;
Miriam Moore-Robinson, MD
Arch Neurol. 1972;26(1):36-48.
Abstract
Alterations occurred in the overnight sleep patterns of four healthy male subjects before and after trans-Atlantic flights in both directions. On the first night after a London/San Francisco flight, stage 4 sleep was enhanced, and rapid eye movement (REM) sleep was depressed, although the distribution of both types of sleep during the night was not altered. Early morning waking was a feature of the first five nights in the new time zone, particularly in the older subjects. Similar changes occurred after the return flight. There was no evidence of enhancement of REM sleep and the alteration in the distribution of REM sleep which has been noted in laboratory studies of sleep reversal. However, the changes found were in accord with travellers' complaints. No definite evidence of circadian effects due to alteration in time zone were demonstrated.
Author Affiliations
Edinburgh; Maidenhead, England; Edinburgh; London; Maidenhead
From the Sleep Laboratory, Department of Psychiatry, University of Edinburgh (Drs. Evans and Lewis); Syntex Pharmaceuticals, Maidenhead, England (Drs. Christie and Moore-Robinson); and the Department of Chemical Pathology, West London Hospital, London (Dr. Daly).
Footnotes
Accepted for publication June 3, 1971.
Reprint requests to Department of Psychiatry, University of Edinburgh, Edinburgh (Dr. Evans).
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