Which of the following physical events occurs during REM sleep?
A) Breathing becomes rapid and irregular
B) Muscular tension increases as dream activity becomes more intense
C) Heart rate decreases
D) Eyes begin darting around behind the eyelids once or twice each hour

Question

Quizplus · Accepted Answer

During REM (Rapid Eye Movement) sleep, breathing becomes rapid and irregular, which is characteristic of this sleep phase. REM sleep is also associated with vivid dreams, and despite an increase in brain activity, major muscle groups become paralyzed, not tense. Heart rate typically increases or becomes irregular, not decreases, and the eyes move rapidly, not just once or twice each hour.

Which of the Following Physical Events Occurs During REM Sleep