Entrainment of human circadian rhythms by artificial bright light cycles - PubMed (original) (raw)

Entrainment of human circadian rhythms by artificial bright light cycles

K Honma et al. Experientia. 1987.

Abstract

Artificial bright light cycles (LD 8:16) of about 5000 lux during the light period were applied to two subjects in a temporal isolation unit, who had shown free-running circadian rhythms in sleep-wakefulness and rectal temperature. The circadian rhythms were successfully entrained by the artificial light cycle, but the phase relation of the rhythms to the light cycle was substantially different between the two subjects. The result indicated that the artificial bright lights are able to reset human circadian rhythms.

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