Discuss the role of endogenous pacemakers and exogenous zeitgebers: Researchers

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  • Created by: 08rmorris
  • Created on: 27-05-15 12:11
Morgan
Removed the SCN from hamsters, their nocturnal circadian rhythms broke down. Transplanting the SCN cells re-established the rhythms, including mutant rhythms from mutant hamsters, which shows that the SCN is the main pacemaker
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Miles et al.
Study of a bling man provided supporting evidence for endogenous factors on the sleep wake cycle. He had a 26.9 hour circadian rhythm-had to use stimulants and sedatives to adjust and rest as he did not have the endogenous factor of light
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People who live in circumpolar regions
Maintain normal sleeping patterns through the winter months without light and through the light period in the summer
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McClintock and Stern (1998)
Showed that external factors can have an effect on menstruation
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Russell (1980)
Involved rubbing donor pheromones onto women's upper lip daily for 5 months 4/5 menstrual cycles match the hormone of the donor.
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Card 2

Front

Study of a bling man provided supporting evidence for endogenous factors on the sleep wake cycle. He had a 26.9 hour circadian rhythm-had to use stimulants and sedatives to adjust and rest as he did not have the endogenous factor of light

Back

Miles et al.

Card 3

Front

Maintain normal sleeping patterns through the winter months without light and through the light period in the summer

Back

Preview of the back of card 3

Card 4

Front

Showed that external factors can have an effect on menstruation

Back

Preview of the back of card 4

Card 5

Front

Involved rubbing donor pheromones onto women's upper lip daily for 5 months 4/5 menstrual cycles match the hormone of the donor.

Back

Preview of the back of card 5

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