circadian rhythm

(redirected from Circadian cycles)
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  • noun

Words related to circadian rhythm

a daily cycle of activity observed in many living organisms

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To overcome the problems of wide variations in diseased animals and circadian cycles, we adopted a novel approach using a mixed-effects model to investigate whether ambient particle exposure was associated with changes in heart rate and blood pressure in pulmonary hypertensive rats.
The circadian cycles established by this clock occur throughout nature and have a period of approximately 24 hours.
Properly timed exposure to bright light can help realign their circadian cycles so they sleep through the night.
Moreover, genetic mutants lacking circadian cycles of rest and activity died more quickly on infection with these pathogens than normal flies did.
Then, biologists found they could throw the eyes' rhythms out of sync with other circadian cycles.
The same research team now has completed a larger study designed to find out how people with normal sleep patterns react to different light patterns given at varying stages in their circadian cycles.