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Efficacy of a single sequence of intermittent bright light pulses for delaying circadian phase in humans

Archive ouverte | Gronfier, Claude | CCSD

International audience. It has been shown in animal studies that exposure to brief pulses of bright light can phase shift the circadian pacemaker and that the resetting action of light is most efficient during the f...

Characterizing the temporal Dynamics of Melatonin and Cortisol Changes in Response to Nocturnal Light Exposure

Archive ouverte | Rahman, Shadab | CCSD

International audience. Abstract We studied the dynamics of melatonin suppression and changes in cortisol levels in humans in response to light exposure at night using high-frequency blood sampling. Twenty-one young...

Intrinsic Period and Light Intensity Determine the Phase Relationship between Melatonin and Sleep in Humans

Archive ouverte | Wright, Kenneth | CCSD

International audience. The internal circadian clock and sleep-wake homeostasis regulate the timing of human brain function, physiology, and behavior so that wakefulness and its associated functions are optimal duri...

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