期刊
CHRONOBIOLOGY INTERNATIONAL
卷 18, 期 5, 页码 737-758出版社
TAYLOR & FRANCIS INC
DOI: 10.1081/CBI-100107511
关键词
diurnal; irradiance detection; light; locomotor activity; masking; melatonin; nocturnal; photoreception
Light influences mammalian circadian rhythms in two different ways: (1) It entrains endogenous oscillators (clocks), which regulate physiology and behavior; and (2) it affects directly and often immediately physiology and behavior (these effects are also referred to as masking). Masking effects of light on pineal melatonin, locomotor activity, and the sleep-wake cycle in mammals and man are reviewed. They seem to represent a universal response in this group. The review reveals that the mechanism of photic inhibition of melatonin is fairly well understood, whereas only little is known about the influence of light on other circadian rhythm outputs, such as locomotor activity.
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