Sentences with phrase «circadian time cue»
Melatonin Melatonin, the hormone produced nocturnally by the pineal gland, serves as a circadian time cue and sleep - anticipating signal in humans.
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«This is the first reliable evidence that a lunar rhythm can modulate sleep structure in humans when measured under the highly controlled conditions of a circadian laboratory study protocol without time cues,» the researchers say.
Chang: We have known for quite awhile now that light is the most powerful cue for shifting the phase or resetting the time of the circadian clock.
Results suggest a revised model of circadian entrainment, with the adaptation of the internal clock by external time cue, resulting in a mode of photic entrainment in which light can in parallel reset central and peripheral clocks.
According to Dr. Michael Breus, a clinical psychologist with a board certification in sleep medicine, the steep drop in body temperature at night is one of the circadian cues that the body takes that it is time to sleep.