How do most sleep researchers distinguish among the four stages of non-REM sleep?

Name: How do most sleep researchers distinguish among the four stages of non-REM sleep?
Brand: Quizplus
Rating: 4.9 (52 reviews)

Question

Quizplus · Accepted Answer

Most sleep researchers distinguish among the four stages of non-REM sleep based on changes in brain wave patterns. These brain wave patterns are measured using an electroencephalogram (EEG) during sleep. Each stage of non-REM sleep is characterized by a distinct pattern of brain waves.

How Do Most Sleep Researchers Distinguish Among the Four Stages