A J K Phillips,P Y Chen,P A Robinson
A J K Phillips
The physiological mechanisms underlying interindividual differences in chronotype have yet to be established, although evidence suggests both circadian and homeostatic processes are involved. A physiologically based model is developed by co...
Christopher M Jung,Sat Bir S Khalsa,Frank A J L Scheer et al.
Christopher M Jung et al.
Multisynaptic neural and endocrine pathways from the suprachiasmatic nucleus of the hypothalamus have been hypothesized to communicate circadian and photic information to the adrenal glands. In humans, light exposure has been reported to ha...
Lawrence P Morin,Pablo J Lituma,Keith M Studholme
Lawrence P Morin
In nocturnal rodents, millisecond light ("flash") stimuli can induce both a large circadian rhythm phase shift and an associated state change from highly active to quiescence followed by behavioral sleep. Suppression of locomotion ("negativ...
Increased late night response to light controls the circadian pacemaker in a nocturnal primate [0.03%]
增强的夜间光照反应控制夜行灵长类动物的昼夜节律起搏器
Martine Perret,Doris Gomez,Alexandra Barbosa et al.
Martine Perret et al.
The mammalian endogenous circadian clock, the suprachiasmatic nuclei, receives environmental inputs, namely the light-dark cycle, through photopigments located in the eye and from melanopsin-expressing retinal ganglion cells. The authors in...
Photoperiod and reproductive condition are associated with changes in RFamide-related peptide (RFRP) expression in Syrian hamsters (Mesocricetus auratus) [0.03%]
光周期和生殖状态与叙利亚仓鼠（Mesocricetus auratus）RFamide相关肽（RFRP）表达变化有关
Alex O Mason,Sean Duffy,Sheng Zhao et al.
Alex O Mason et al.
To conserve scarce energetic resources during winter, seasonal breeders inhibit reproduction and other nonessential behavioral and physiological processes. Reproductive cessation is initiated in response to declining day lengths, a stimulus...
Is the torpor-arousal cycle of hibernation controlled by a non-temperature-compensated circadian clock? [0.03%]
冬眠的休眠-清醒周期由非温度补偿型生物钟控制吗？
André Malan
André Malan
During the hibernation season, mammalian hibernators alternate between prolonged bouts of torpor with a reduced body temperature (Tb) and short arousals with a return to euthermy. Evidence is presented here to show that this metabolic-and a...
What season is it anyway? Circadian tracking vs. photoperiodic anticipation in insects [0.03%]
到底是什么季节？昆虫的生物钟追踪与光周期预测
William E Bradshaw,Christina M Holzapfel
William E Bradshaw
The daily rhythm of 24 h and the annual rhythm of 12 mo constitute the 2 major, highly predictable rhythms of the biosphere. The internal circadian clock enables organisms to track daily changes in their environment; the photoperiodic timer...
Velocity response curves support the role of continuous entrainment in circadian clocks [0.03%]
速度响应曲线支持昼夜钟连续校准的作用
Stephanie R Taylor,Alexis B Webb,Katherine S Smith et al.
Stephanie R Taylor et al.
Circadian clocks drive endogenous oscillations in organisms across the tree of life. The Earth's daily light/dark cycle entrains these clocks to the environment. Two major theories of light entrainment have been presented in the literature....
Nuclear receptor rev-erb-{alpha} circadian gene variants and lithium carbonate prophylaxis in bipolar affective disorder [0.03%]
核受体REV-ERBα昼夜基因变异与碳酸锂在双相情感障碍的预防作用关系的研究
Sara Campos-de-Sousa,Camila Guindalini,Leonardo Tondo et al.
Sara Campos-de-Sousa et al.
Rev-erb-alpha is one of the key components of the mammalian circadian mechanism; recently, it was also reported to be involved in the biological action of lithium. We investigated whether polymorphisms in the Rev-erb- alpha gene are associa...
In vivo quantification of the retinal reflectance spectral composition in elderly subjects before and after cataract surgery: Implications for the non-visual effects of light [0.03%]
白内障手术前后老年人视网膜反射光谱量化的在体研究及光的非视觉作用的影响
Marina C Giménez,Martijn J Kanis,Domien G M Beersma et al.
Marina C Giménez et al.
Light is the signal that entrains the biological clock in humans to the 24-hour external time. Recently, it has been shown that short wavelengths play a key role in this process. In the present study, we describe a procedure to measure, obj...