1. Biorhythms Recap circadian rhythms. (outline and evaluate)
Ultradian rhythms
(outline)

2. Superchiasmatic nucleus
Starter
Using the following terms. Write up the outline for Circadian Rhythms and sleep
Pineal Gland
Endogenous Pacemaker
Internal
Temperature
light
Exogenous Zeitgebers
Superchiasmatic nucleus
Melatonin

3. Board: Grounding Group task
I am going to show you a picture related to a piece of research
You must find the study on page 5 that links
To get the points on the w/b you must explain the study and provide a full grounding
Bonus points for any relevant/useful evaluation you can consider

4. Schochat et al (1997)
mins

5. 24.9
Miles et al (77)

6. 20 hrs
Morgan (1995)

7. 25 hrs
Micheal Siffre

8. Marianna Figeuiro (2012)
22 %

9. Evaluation of Research
Controlled conditions increase confidence in validity. Schochat’s research took place in a well controlled laboratory environment.
Correlation criticisms. Schochat’s relationship is correlational so only proves a relationship not the cause of the relationship.
However insomniacs treated with melatonin do find it easier to sleep.
Validity of animal research is questionable. Extrapolation from animals to humans is an issue in Morgan’s hamster study, though no reason to suppose it would be any different.

10. Morning Lark or Night owl?
What does this suggest about Circadian rhythm onset?
Individual differences

11. Appropriate IDA?
Can we change our cycles?

12. Nature vs Nurture or Determinism
IDA- A mixture of environmental and biological determinism interact to control your circadian rhythms.
This is because we definitely know that our circadian rhythms are controlled by endogenous i.e. biological factors, however as exogenous zeitgebers for instance light can have an impact on these rhythms that there is an element of the environment also.
So the theory is an interact of the two and this is definitive.

13. IDA example for the Circadian Rhythm
The Point:
The theory enables us to understand how both ____________ ______________ and ______________ ________________ act together to control the rhythm
Explain the Point:
This is because the theory show that while __________ _________ such as the role of the SCN largely control the rhythm, ___________ _____________ , such as light, play a part in …
Resetting the rhythm
So What?
The greater understanding that the theory gives us of how the circadian rhythm is controlled, may lead to useful…
Applications
As it could help us to deal with…
People who have circadian rhythm disorders more effectively
It could also help us to minimise the unpleasant and harmful effects of
Shift work and Jet Lag
Biological
Environmental
pacemakers
Exogenous
determinism
determinism
Endogenous
zeitgebers

14. Practical Applications
Sleep Hygiene
Use of devices
Taking of medication/treatment
Work/study schedules
Fitness/ sport regime

15. How could the following effect circadian rhythms?
Jet Lag
Shift work
Use the following terms
Zeitgebers, internal and external, disrupts,

16. Ultradian rhythms