Which of the following is a correct match?
a. Stage 1 - sleep spindles
b. Stage 2 - beta waves
c. Stage 3 - hypnic jerk
d. Stage 4 - delta waves
D
Psychology
a. Stage 1 - sleep spindles
b. Stage 2 - beta waves
c. Stage 3 - hypnic jerk
d. Stage 4 - delta waves
D