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Significance of light and social cues in the maintenance of temporal organization in man (1989)
The effects of light:darkness (LD) cycles and social interaction on the response to long-term confinement (105 days) were investigated experimentally in three groups of three male subjects aged 20-24 years. Data from measurements of physiological parameters indicating changes in circadian rhythms are presented in graphs and analyzed; it is found that the LD-induced rhythm changes observed in previous studies of subjects isolated singly do not appear when subjects are confined in groups of three, suggesting a positive adaptive effect of social contact. In one subject who was transferred to a different group at day 84, hostile social interactions and poor circadian-rhythm entrainment were observed; the possible reasons for this response are considered.
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circadian rhythms, darkness, LD, light, physiological, social cues, temporal organizatio
Physiologist, Supplement, 32, S95-S96 , Feb 1, 1989
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