Circadian Rhythms

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Last updated: October 24, 2023

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First submitted	October 24, 2023
Times taken	9
Average score	40.0%
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Hint	Answer
How long ?	once every 24 hours
Example	sleep wake cycle
Study	Michel Siffre 1972
	6 months underground in a cave in texas
	no cue to the time of day
	wired up via a computer
	initially his bodily rhythms were very erratic
	daily cycle was 25 hours

Hint	Answer
	support for endogenous pacemakers as he had a semi regular cycle
	support for exogenous zeitgebers as he thought one day was longer than it was
Evaluation	poor control
	shift workers
	small samples
	age differences
	duffy et al 2001