Infradian Rhythms

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Last updated: October 24, 2023

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First submitted	October 24, 2023
Times taken	8
Average score	68.8%
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Hint	Answer
How often ?	less than once every 24 hours
Example	female menstrual cycle
endogenous pacemaker	hormones
research findings	women who live together tend to menstruate at the same time
study	Mcclintock 1998
method	daily samples of sweat were collected from one group of women and rubbed onto the upper lip of women in a second group
findings	female menstrual cycle became synchronised through odour exposure
	synchronisation can be affected by pheromones

Hint	Answer
	exogenous zeitgebers play a role
Example 2	seasonal affective disorder
	lack of light results in a longer period of melatonin secretion
Evaluation	Reinberg 1967
	many factors which influence the menstrual cycle
	evolutionary advantage
	deterministic
	born et al 1999