Exogenous Zeitgebers

Question 1

Entrainment

Answer 1

resetting biological clocks

Question 2

External cues

Answer 2

Free-running biological clock continues in cyclical pattern entrained by exogenous zeitgebers

Question 3

Light

Answer 3

CAMPBELL + MURPHY woke 15 ppts at various times and shone light on back of knees which produced a variation in s/w cycle sof up to 3 hours

Question 4

Social cues - babies

Answer 4

s/w cycles are random in babies but at 16 weeks they are entrained as adult determines the meal and bed times

Question 5

Social cues - jet lag

Answer 5

Adapting to local eat and sleep time entrian CR and tackles jet lag

Question 6

AO3 - differ in different environments

Answer 6

s/w cycles primarily controlled by EP
- Innuit Indians in Artic Circle have similair s/w all year round despite 6 months in total darkness

Question 7

AO3 - MILES ET AL

Answer 7

Man, blind from birth with CR of 24.9 hours
- despite social cue exposure his s/w cycle could not be adjusted