Human Adolescent Phase Response Curves to Bright White Light
نویسندگان
چکیده
منابع مشابه
A phase response curve to single bright light pulses in human subjects.
The circadian pacemaker is differentially sensitive to the resetting effects of retinal light exposure, depending upon the circadian phase at which the light exposure occurs. Previously reported human phase response curves (PRCs) to single bright light exposures have employed small sample sizes, and were often based on relatively imprecise estimates of circadian phase and phase resetting. In th...
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Using 'classical' experimental protocols, a human phase-response curve (PRC) to a single 3-h bright light pulse has been established. When the light pulse was centred slightly before the time of body temperature minimum, the circadian system delayed, whilst a pulse slightly after the minimum advanced it. Maximum phase shifts were about 2 h. When light pulses over 3 successive cycles were used, ...
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Light is the dominant environmental time cue for circadian clocks. In 1998, bright, narrow-spectrum blue light exposure to the back of the knees was reported to reset the human circadian pacemaker (HCP) (1). Science recognized the widely cited report as among the top discoveries that year to “transform our ideas about the natural world” and reported that several groups had repeated the finding ...
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Limited research has compared the circadian phase-shifting effects of bright light and exercise and additive effects of these stimuli. The aim of this study was to compare the phase-delaying effects of late night bright light, late night exercise, and late evening bright light followed by early morning exercise. In a within-subjects, counterbalanced design, 6 young adults completed each of thre...
متن کاملWhite Light Diffraction Phase Microscopy
Quantitative phase imaging (QPI) techniques are very advantageous compared to the qualitative phase imaging techniques like bright field microscopy, phase contrast microscopy, differential interference contrast microscopy due to measurement of phase information quantitatively. In QPI techniques, there is no need of exogenous contrast agents to stain or tag the specimen. White light diffraction ...
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ژورنال
عنوان ژورنال: Journal of Biological Rhythms
سال: 2017
ISSN: 0748-7304,1552-4531
DOI: 10.1177/0748730417713423