Direct correlation between the circadian sleep-wakefulness rhythm and time estimation in humans under social and temporal isolation |
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Authors: | M. K. Chandrashekaran G. Marimuthu R. Subbaraj P. Kumarasamy M. S. Ramkumar K. Sripathi |
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Affiliation: | (1) Department of Animal Behaviour and Physiology, School of Biological Sciences, Madurai Kamaraj University, 625 021 Madurai, India |
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Abstract: | Several bodily functions in humans vary on a 24 h pattern and most of these variations persist with a circadian period ofca 25 h when subjects are studied under conditions of social and temporal isolation. We report in this paper that the estimates of short time intervals (TE) of 2 h are strongly coupled to the circadian rhythm in sleepwakefulness. There is a linear correlation between the number of hours humans stay awake (α) and their estimation of 2 h intervals. The coupling of TE to α appears to obtain only under conditions of physical well-being. |
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Keywords: | Human circadian rhythms sleep-wakefulness temperature freeruns dissociation biological oscillators and models |
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