Abstract:
:A physiological dose of orally administered melatonin shifts circadian rhythms in humans according to a phase-response curve (PRC) that is nearly opposite in phase with the PRCs for light exposure: melatonin delays circadian rhythms when administered in the morning and advances them when administered in the afternoon or early evening. The human melatonin PRC provides critical information for using melatonin to treat circadian phase sleep and mood disorders, as well as maladaptation to shift work and transmeridional air travel. The human melatonin PRC also provides the strongest evidence to date for a function of endogenous melatonin and its suppression by light in augmenting entrainment of circadian rhythms by the light-dark cycle.
journal_name
Chronobiol Intjournal_title
Chronobiology internationalauthors
Lewy AJ,Ahmed S,Jackson JM,Sack RLdoi
10.3109/07420529209064550subject
Has Abstractpub_date
1992-10-01 00:00:00pages
380-92issue
5eissn
0742-0528issn
1525-6073journal_volume
9pub_type
杂志文章abstract::The rods in the retina are responsible for night vision, whereas the cone system enables day vision. We studied whether rod function in humans exhibits an endogenous circadian rhythm and if changes occur in conditions of prolonged darkness. Seven healthy subjects (mean age+/-SD: 25.6+/-12.3 yr) completed a 4.5-day pro...
journal_title:Chronobiology international
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