Stages of Sleep

Question 1

Stage 1:

Answer 1

low amps, high frequency, similar to wakefulness.

Question 2

Stage 2:

Answer 2

higher amplitude, lower frequency. K-complexes and Sleep Spindles.

Question 3

Stage 3:

Answer 3

Stage 3: Occasional delta waves.

Question 4

Stage 4:

Answer 4

Stage 4: Delta waves over 50% of activity… then regresses backwards through the stages, back to stage 1.

Question 5

Emergent Stage 1:

Answer 5

Emergent Stage 1: includes REM and loss of body tone. Brain/nervous system are much more active. DREAMING.