U4 AOS1 Dot Point 9

Question 1

what is a circadian phase disorder

Answer 1

when the sleep-wake cycle and sleep-wake schedule are not synchronised

Question 2

3 types of circadian phase disorders

Answer 2

adolescence

jetlag

shift work

Question 3

what is a sleep-wake cycle shift in adolescence and how can it be explained

Answer 3

need 9 hours but most adolescents don’t get that much

explained by social and psychological factors - mental health issues, friendship issues, overthinking, working late, studying late, using screens at night

biological factors - delayed melatonin release

Question 4

what is a sleep debt

Answer 4

difference between the amount of sleep needed and the amount of sleep we get

debt needs to be repaid but not in full

Question 5

what is a sleep-wake cycle disturbance due to shift work

Answer 5

occurs when working hours outside 9-5, particularly evening and night shift

Question 6

what is a sleep-wake cycle disturbance due to jet lag

Answer 6

due to travel across time zones

mismatch between internal circadian biological clock and the external environment

fixed after a few days

west is best