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 becomes drowsy and then enters the first stage of sleep?

Question

Quizplus · Accepted Answer

As the person becomes drowsy and enters the first stage of sleep, the alpha waves will gradually start to decrease in amplitude and be replaced by theta waves. Delta waves are associated with deep sleep stages and are not typically seen until later stages of sleep. Beta waves are associated with wakefulness and would not be present in this stage. Spindles are seen in the second stage of sleep, not the first.

You Are Watching Sleep Researchers Monitor the Sleep of a Normal