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BIOLOGICAL RHYTHMS AND SLEEP



RHYTHM CIRCADIAN INFRADIAN ULTRADIAN
LENGTH 24 Hours Over 24 Hours Less than 24 Hours
EXAMPLE 1 Sleep-wake Cycle Menstrual Cycle Sleep Stages
EXAMPLE 2 Body temperature Cycle Seasonal Affective Basic rest-activity Cycle
Disorder (SAD)
CASE STUDIES TO Michel Siffre (1975) Empson (1977) Dement and Kleitman
REMEMBER!…

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SLEEP DEPRIVATION:














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KEY PHRASES/ THINGS TO INCLUDE FOR THE EXAM:

INDIVIDUAL DIFFERENCES
CAUSE OR CORRELATION?
GENDER/CULTURAL/AGE/SOCIAL/POLITICAL BIAS
DETERMINISTIC
REDUCTIONIST
MUNDANE REALISM
SOCIAL DESIRABILITY

WHAT'S THE METHODOLOGY?

NON-HUMAN ANIMAL RESEARCH

RESEARCH COMPLICATIONS

NAME TOPIC WHAT THEY DID WHAT THEY FOUND
Michel Siffre Circadian Rhythms Underground cave Circadian rhythm runs…

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BIOLOGICAL RHYTHMS AND SLEEP

5) Outline and evaluate one or more evolutionary explanations for the functions of sleep (4+16 marks)
6) Outline the nature of sleep (9 marks)
7) Consider the consequences of disrupting biological rhythms (16marks
8) Discuss the role of endogenous pacemakers in the control of one or…

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