Circadian rhythms

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Folkard et el'77
Core Body Temperature: Learning ability of 12-13 yr olds who were read to at either 9am or 3pm. After 1 week the afternoon group with increased body temperature showed superior recall and comprehension.
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Gupta'91
Core Body Temperature: Performance on IQ tests at 7pm better than at 9am and 2pm.
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Michel Siffre
Sleep-waking Cycle: Lived underground without exogenous zeitgebers and relied only on his endogenous pacemaker. Free-running occured and his natural CR settled to around 24 hrs but sometimes would change to as much as 48 hrs.
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Czeizeler'99
Research Study: allowing p's to switch on bright light was like giving them the equivilent of a drug that resets their internal clock.
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Aschoff & Weber'62
Research Study: P's put in a bunker w/ no endogenous zeitgebers. They settled into a CR ranging between 25-27 hrs.
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Miles et al'77
Supporting Evidence: P blind from birth and had a CR of 24.9. He had problems in keeping in time with the 24 clock, it is not needed to maintain the cycle.
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Moore-Ede
IDA: Taking medication at regular intervals may be ineffective. People should take medication according to their CR.
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Folkard et al'85
Research Studies: P's lived in a cave and the experimenter imposed a 22 hr cycle, however p's continued to follow 24 hr CR.
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Core Body Temperature: Performance on IQ tests at 7pm better than at 9am and 2pm.

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Gupta'91

Card 3

Front

Sleep-waking Cycle: Lived underground without exogenous zeitgebers and relied only on his endogenous pacemaker. Free-running occured and his natural CR settled to around 24 hrs but sometimes would change to as much as 48 hrs.

Back

Preview of the back of card 3

Card 4

Front

Research Study: allowing p's to switch on bright light was like giving them the equivilent of a drug that resets their internal clock.

Back

Preview of the back of card 4

Card 5

Front

Research Study: P's put in a bunker w/ no endogenous zeitgebers. They settled into a CR ranging between 25-27 hrs.

Back

Preview of the back of card 5
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