You are watching sleep researchers monitor the sleep of a normal adult. The participant is hooked up to an EEG. What brain waves would you observe as the person goes from a state of calm wakefulness to the first stage of sleep?

Question

Quizplus · Accepted Answer

As the person goes from a state of calm wakefulness to the first stage of sleep, the alpha waves gradually decrease in frequency and amplitude, and the theta waves start to appear. Therefore, the correct answer choice is C, which states that alpha waves would eventually be replaced by theta waves. Delta waves typically appear in deeper stages of sleep and are not observed at the first stage. Beta waves are typically observed during the waking state and not during the transition to sleep.

You Are Watching Sleep Researchers Monitor the Sleep of a Normal