Although Baby Irina's eyelids are closed, occasional rapid eye movements can been seen beneath them. Her breathing is irregular. She stirs occasionally and grimaces while she sleeps. Irina is probably in which of the following states of arousal?

Question

Quizplus · Accepted Answer

The rapid eye movements and irregular breathing suggest that Baby Irina is in REM (rapid eye movement) sleep, which is characterized by active brain activity and dreams. The occasional stirring and grimacing also support this as a common occurrence during REM sleep.

Although Baby Irina's Eyelids Are Closed, Occasional Rapid Eye Movements