Cycles of dim red light capable of entraining circadian rhythms of rats after long‐term exposure to constant white light
作者:
J.F. Ruis,
W.J. Rietveld,
期刊:
Journal of Interdisciplinary Cycle Research
(Taylor Available online 1992)
卷期:
Volume 23,
issue 2
页码: 113-119
ISSN:0022-1945
年代: 1992
DOI:10.1080/09291019209360135
出版商: Taylor & Francis Group
关键词: Circadian rhythms;entrainment;red light;light exposure
数据来源: Taylor
摘要:
In circadian studies dim red light is often used as a convenient alternative for darkness because it would not affect the pacemaking system. In this study male Wistar rats were first exposed to constant light (LL) for 3 months and next to LD 14:10 cycles of dim red light (> 610 nm; 1 ‐ 5 μWatt/cm2) while recording feeding behaviour. All rats displayed entrainment of the circadian feeding rhythm to the red light cycle. A phase reversal of the LD cycle was followed by a gradual reentrainment over 5–8 weeks via delaying transients.
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