Sleep

Question 1

NREM Length

Answer 1

About 90 minutes

Question 2

Stage 1

Answer 2

• Transition
• Gradually disengage from surroundings
• Can easily wake up if needed.
• alpha waves to theta waves

Question 3

Stage 2

Answer 3

Brain activity continues to slow down.
Sleep Spindles and k Complexes
Theta Waves to delta waves

Question 4

Sleep Spindles

Answer 4

Stage 2
Brief burst of brain activity

Question 5

k Complexes

Answer 5

Stage 2
Single high-voltage spike in brain activity

Question 6

Stage 3

Answer 6

Delta waves is 20% of activity

Question 7

Stage 4

Answer 7

Delta waves 50%-100% of brain activity
Heart rate, breathing, blood pressure drop.
Not waken up easily. ( can still walk)

Question 8

REM

Answer 8

Brain becomes more active.
Dreams
Rapid eye movement, heart rate, breathing, and blood pressure fluctuate.

Question 9

What does the brain do when sleeping

Answer 9

Shrinks to allow fluid to cleanse it.
Rewires/ creates myelin sheath
First 1-4 hours: Processes routine info
First 6-8 hours: Processes complex tasks
Hormones are released to repair body.