Bailey is hooked up to an electroencephalograph (EEG)in a sleep lab.She has been asleep for just over an hour now,and her EEG is showing low amplitude,irregular brain wave patterns.Her breathing and pulse rate are irregular,and her eyes are darting back and forth beneath her closed eyelids.The researcher who is monitoring Bailey's sleep can conclude that Bailey
A) has just entered REM sleep.
B) has just entered Stage 4 sleep.
C) is experiencing sleep anoxia and needs immediate medical attention.
D) suffers from a sleep disorder.

Question

Quizplus · Accepted Answer

The low amplitude, irregular brain wave patterns, along with the irregular breathing, pulse rate, and eye movements all suggest that Bailey has entered the stage of rapid eye movement (REM) sleep. This is characterized by heightened brain activity and vivid dreaming, as well as physical responses such as increased heart rate and breathing variability. Therefore, choice A is the best answer. Choice B is incorrect, as Stage 4 sleep is associated with slower brain waves and a more regular breathing and pulse rate. Choice C is unlikely, as sleep apnea typically involves loud snoring and pauses in breathing rather than irregular breathing, and would have been diagnosed prior to the sleep study. Choice D is also unlikely, as REM sleep is a normal part of a healthy sleep cycle.

Bailey Is Hooked Up to an Electroencephalograph (EEG)in a Sleep