Dim nocturnal illumination alters coupling of circadian pacemakers in Siberian hamsters, Phodopus sungorus
Dim nocturnal illumination alters coupling of circadian pacemakers in Siberian hamsters, Phodopus sungorus
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DOI：
10.1007/s00359-004-0522-7
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发表时间：
2004-08-01
影响因子：
2.1
通讯作者：
Elliott, JA
中科院分区：
文献类型：
--
作者：
Gorman, MR;Elliott, JA
哺乳动物的昼夜节律起搏器包括多个振荡器，这些振荡器可以采用不同的相位关系来确定耦合系统的性质。在两种被认为需要改变底层振子相位关系的再诱食范式下，研究了与昏暗月光相当的夜间照明对雄性西伯利亚仓鼠的影响。在实验1中，仓鼠暴露在24小时的光-暗-光-暗循环中，该循环将昼夜节律分成两个部分，从而将活动分为两个每日黑暗期。暴露在昏暗灯光下的仓鼠(
The circadian pacemaker of mammals comprises multiple oscillators that may adopt different phase relationships to determine properties of the coupled system. The effect of nocturnal illumination comparable to dim moonlight was assessed in male Siberian hamsters exposed to two re-entrainment paradigms believed to require changes in the phase relationship of underlying component oscillators. In experiment 1, hamsters were exposed to a 24-h light-dark-light-dark cycle previously shown to split circadian rhythms into two components such that activity is divided between the two daily dark periods. Hamsters exposed to dim illumination (