endegenous pacemakers

Question 1

what is an endegenous pacemaker

Answer 1

internal body clocks that regulate many of our biological rythmns such as the importance of the SCN for the sleep wake cycle or hormones for the menstrual cycle

Question 2

what is the SCN

Answer 2

Tiny bundle nerve cells located in the hypothalamus in each hemisphere of the brain, influential for maintaining circadian rythmns such as the SWC

Question 3

what are the 2 studies for endegenous pacemakers

Answer 3

de coursey et al and morgan et al

Question 4

what happened in de courseys study

Answer 4

he destroyed the SCN in 30 chipmunks, they were returned to their natural enviornment and observed for 30 days, they had been killed by predators as they were awake when they shouldve been asleep

Question 5

what is the a03 for this

Answer 5

ethical issues- he risked the life of the chipmunks all for a study, we dont know whether the ends justifies the means for this study, the results arent that significant

Question 6

what was morgans study

Answer 6

he bred hamsters so they had a circadian rythmn of 20 hours, he then removed the scn from these hamsters and placed them in normal hamsters. the hamsters then displayed the same abnormal circadian rythmn of 20 hours

Question 7

what is the A03 FOR THIS STUDY

Answer 7

There are extrapolation issues raised from this as he used hamsters.