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October 28, 1977Science

Blind Man Living in Normal Society Has Circadian Rhythms of 24.9 Hours

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Population

1 psychologically normal blind man living and working in normal society, suffering from a severe cyclic…

Design

Case_report

Authors

LMLaughton E. MilesDRD. M. RaynalMWMichael A. Wilson

Discussion

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Overview

May explain cyclic sleep disorders in blindness; leaves open lunar entrainment beyond this single case.

Structured PICO

P
Population
1 psychologically normal blind man living and working in normal society, suffering from a severe cyclic sleep-wake disorder
O
Outcome
Circadian rhythms of body temperature, alertness, performance, cortisol secretion, and urinary electrolyte excretionsurrogate

A blind individual living in normal society can exhibit a free-running circadian rhythm of 24.9 hours, leading to severe cyclic sleep-wake disorder.

Cite This Study

Miles et al. (1977) studied this question.

synapsesocial.com/papers/6a11cd3a1d1aaf8555563073https://doi.org/10.1126/science.910139
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