Sleep

Question 1

Why is sleep essential for survival (2)

Answer 1

Fatal Familial Insomnia
Animal studies of sleep deprivation

Question 2

What essential function does sleep serve based on human studies? (4)

Answer 2

Not physical or physiological well-being
Cognitive-sleep deprive, get hallucinations, impaired perceptions, and decreased concentration
Missed sleep is ‘made up,’ especially Stage 4 and REM sleep
Blood flow and cerebral metabolism decrease in stage 4 sleep, so is sleep a good way to get brain rest?

Question 3

Why do we sleep according to animal studies