Circadian Rhythms

HideShow resource information
Circadian Rhythms: WHAT?
Cycles of 24 hours Eg: Sleep/ Wake cycle
1 of 7
Circadian Rhythms: Endogenous Pacemakers?
Hypothalamus- SCN- unbuilt 24hr firing pattern- sensitive to light
2 of 7
Circadian Rhythms: SCN & Melatonin?
Scn regulates melatonin in Pineal gland- induce sleep hormone- produce in dark= sleep, inhibit in light= awake
3 of 7
Circadian Rhythms: Exogenous Zeitgeiber
Ez in the sleep wake cycle= light resets body clock each morning
4 of 7
Circadian Evaluation: Campbell? + - ?
Light behind knee- C/R altered + light as EZ
5 of 7
Circadian Evaluation: Shiffre? + -?
In cave for months- isolated from environmental stimuli- S/W cycle 241/2 hours.m + EP's alone can regulate cycle though altered slightly - one off case study cant generalise
6 of 7
Circadian Rhythms: Morgan? +-?
Mutant hamsters, abnormal rhythms of 20hrs, transplanted abnornmal SCN's to normal hamsters- their rhythms became abnormal too. + supports SCN as EP - hamsters cant extrapolate S= unethical animal rights
7 of 7

Other cards in this set

Card 2

Front

Hypothalamus- SCN- unbuilt 24hr firing pattern- sensitive to light

Back

Circadian Rhythms: Endogenous Pacemakers?

Card 3

Front

Scn regulates melatonin in Pineal gland- induce sleep hormone- produce in dark= sleep, inhibit in light= awake

Back

Preview of the back of card 3

Card 4

Front

Ez in the sleep wake cycle= light resets body clock each morning

Back

Preview of the back of card 4

Card 5

Front

Light behind knee- C/R altered + light as EZ

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Sleep resources »