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Effects of Melatonin and 5‐Methoxytryptamine on Sleep‐Wake Patterns in the Male Rat

Effects of Melatonin and 5‐Methoxytryptamine on Sleep‐Wake Patterns in the Male Rat Melatonin and 5‐methoxytryptamine were administered continuously over a period of 1–3 months to adult male rats by means of subcutaneously implanted silastic capsules containing one or the other of these pineal hormones. Polygraphic recordings during several weeks following hormonal application showed an increase in the amount of time spent in both quier and rapid eye movement sleep, during the light as well as the dark period; however, diurnal sleep‐wake rhythmicity was not affected by either treatment. We conclude that pineal hormones have sleep‐promoting effects, but that their correlation with the lightdark cycle does not imply that they are causal factors in generating diurnal rhythms of sleep and wakefulness. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Pineal Research Wiley

Effects of Melatonin and 5‐Methoxytryptamine on Sleep‐Wake Patterns in the Male Rat

Journal of Pineal Research , Volume 3 (2) – Apr 1, 1986

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References (18)

Publisher
Wiley
Copyright
Copyright © 1986 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0742-3098
eISSN
1600-079X
DOI
10.1111/j.1600-079X.1986.tb00736.x
Publisher site
See Article on Publisher Site

Abstract

Melatonin and 5‐methoxytryptamine were administered continuously over a period of 1–3 months to adult male rats by means of subcutaneously implanted silastic capsules containing one or the other of these pineal hormones. Polygraphic recordings during several weeks following hormonal application showed an increase in the amount of time spent in both quier and rapid eye movement sleep, during the light as well as the dark period; however, diurnal sleep‐wake rhythmicity was not affected by either treatment. We conclude that pineal hormones have sleep‐promoting effects, but that their correlation with the lightdark cycle does not imply that they are causal factors in generating diurnal rhythms of sleep and wakefulness.

Journal

Journal of Pineal ResearchWiley

Published: Apr 1, 1986

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