Restorative Theories of Sleep

Question 1

What do restoration theories of sleep propse?

Answer 1

That sleep enables recovery from activities that deplete the body’s mental and physical resources.

Question 2

GENERALLY, which type of sleep repairs physiological processes and which one repairs psychological processes?

Answer 2

NREM: physiological

REM: psychological

Question 3

3 main posits for NREM sleep?

Answer 3

RIG

REpairs and replenishes the body (repairs cells and detoxifies muscles - marathon runners spent 2 hrs longer sleeping, and significantly more SWS)

Increases immunity (more immune cells, less sleep = more likely to be sick, sleep more when sick)

Secretes the growth hormone more quickly than when not asleep

Question 4

4 main posits for REM sleep

Answer 4

CAMN

Consolidates memories

Alertness

Mood - secretes hormones involved in regulating it

Neurotransmitters (adenosine - produced after using energy and makes us feel tired and is less after sleep; norepinephrine is linked to alertness, need less of it as more sensitive when slept)

Question 5

3 criticisms of the restoration theories?

Answer 5

• Hasn’t been conclusively established whether sleep really restores anything
• If the only purpose of sleep was to recover from exertion, then physically active people would sleep more than people who are bed-bound: this isn’t the case
• Lowered body temperature and metabolic rate are linked to the conservation of energy rather than restoration