Sleep

Question 1

Why do researchers suggest we sleep? Why do we believe it to have an important function?

Question 2

What are the stages of sleep and what does the sleep cycle of a healthy sleeper look like?

Question 3

What is Polysomnography? What different methods can be used?

Question 4

Why may you still not feel well rested after getting 12 hours of sleep after a night out with alcohol?

Question 5

What is the two-process model of sleep regulation?

Answer 5

Model suggests the two factors that contorl our sleep

Question 6

What is Process S aka the sleep-wake homeostasis?

Question 7

What is Process C aka our circadian rhythm?

Question 8

What are zeitgebers?

Question 9

What is the Suprachaismatic Nucleus? Where does it sit? What is its function?

Question 10

How can the circadian rhythm be measured?

Question 11

What is circadian preference? How is ti related to social jetlag/misalignment?

Question 12

What are the main changes in sleep during adolescence

Answer 12

Circadian rhythm is shifted to later
Their sleep pressure is slower - peak tiredness is later on at night

Question 13

What are the three components of the perfect storm model?

Question 14

Explain the bioregulatory pressure of the perfect storm model

Question 15

Explain the Societal pressure of the perfect storm model

Answer 15

Societally set wake times causing permanenet social jet lag

Question 16

Explain the psychosocial pressures of the perfect storm model

Answer 16

Bedtime autonomy
Screen time
Academic pressure

Question 17

What are the circadian rhythm developtmental changes?

Question 18

What are some consequences of short and ill times sleep?

Answer 18

Bad for :
physical health (impacts metabolism so obesity, diabetes, cravings..)
mental health (anxiety depression)
safety (eg on the road)
cognition and academic performance

Question 19

What was learned form Lo et al (2017) experiment on the cognitive effects of bad sleep?

Answer 19

Short and ill timed sleep is accumulative and doesnt return to baseline with a weekend “catch up” , not enough to recuperate. Experiment was clear evidence on the longstanding and accumulative effects of lack of sleep
The articfically curtailed weekday sleep for participants were designed to deprive them of the REM rich final hours of sleep – REM sleep is very important for emotion regulation

Question 20

Adolescents with later circadian preference have a range of poorer outcomes such as

Answer 20

Daytime sleepiness,
Attention difficulties
More injuries and getting emotionally upset
Caffeiner to try to deal with it but its not healthy