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Science 28 October 1977:
Vol. 198. no. 4315, pp. 421 - 423
DOI: 10.1126/science.910139
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Articles

Science, Vol 198, Issue 4315, 421-423
Copyright © 1977 by American Association for the Advancement of Science

articles

Blind man living in normal society has circadian rhythms of 24.9 hours

LE Miles, DM Raynal, and MA Wilson

A psychologically normal blind man, living and working in normal society, suffered from a severe cyclic sleep-wake disorder. Investigations showed that he had circadian rhythms of body temperature, alertness, performance, cortisol secretion, and urinary electrolyte excretion which were desynchronized from the 24-hour societal schedule. These rhythms all had periods which were longer than 24 hours and indistinguishable from the period of the lunar day.


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