With each succeeding stage of sleep (from 1 to 4), ____.
A) breathing and heart rates increase
B) brain activity increases
C) slow, large-amplitude waves increase in number
D) brain waves become smaller

Question

Quizplus · Accepted Answer

Slow, large-amplitude waves increase in number with each succeeding stage of sleep (from 1 to 4), as brain waves become progressively slower and larger. Breathing and heart rates decrease, and brain activity decreases as well. Therefore, options A and B are incorrect, and option D is the opposite of what happens in each succeeding stage of sleep.

With Each Succeeding Stage of Sleep (From 1 to 4)