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6 Cards in this Set
- Front
- Back
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Definition of the Circadian Rhythm
& an example |
A cycle that occurs only once every 24 hours
e.g. sleep-wake cycle |
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Evidence for Circadian Rhythms
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Michel Siffre - 62 days in a cave, emerged on August 20th, he thought it was September 14th. Unintentionally kept regular cycles of sleeping and waking, an average day lasted a little more than 24 hours.
Aschoff & Wever - Volunteers in a disused WW2 bunker. After a month or so without external cues, they adopted a 25 hour daily cycle |
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Definition of the Infradian Rhythm
& an example |
A cycle that lasts over 24 hours
e.g. the menstrual cycle |
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Evidence for Infradian Rhythms
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_______ (____) menstrual cycles between women can be synchronized if they are in close contact by rubbing pheromones from one group of women to another group of women underneath their noses.
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Definition of the Ultradian Rhythm
& an example |
A cycle that occurs less than once a day
e.g. sleep cycle |
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Evidence for Ultradian Rhythms
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?
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