Sleep

Question 1

How many sleep cycles do people tend to go through per night?

Answer 1

4-6

Question 2

What are the four sleep stages?

Answer 2

NREM I
NREM II
NREM III
REM

Question 3

What are the EEG findings in NREM I

Answer 3

Theta waves

Question 4

What are the EEG findings in NREM II

Answer 4

Theta waves
K complexes
Sleep spindles

Question 5

What are the EEG findings in NREM III?

Answer 5

Delta waves

Question 6

What are the EECG findings in REM?

Answer 6

Mixed, predominantly beta

Question 7

Which is deepest sleep stage? What % of sleep is this?

Answer 7

NREM III, 15%

Question 8

What happens in sleep stage NREM III?

Answer 8

Body repairs and regrows tissues, builds bone and muscle and strengthens the immune system

Question 9

In which sleep stage does sleepwalking, night terrors and bedwetting occur?

Answer 9

NREM III

Question 10

What happens to the percentage of REM sleep as we get older?

Answer 10

it decreases

Question 11

How long does it generally take to enter REM sleep?

Answer 11

90 minutes

Question 12

What are the characteristics of REM sleep?

Answer 12

Autonomic instability
Loss of muscle tone
Dreaming
Rapid eye movements
Penile erection
Reduced auditory sensitivity