Sleep stages 1-4 are termed ________, whereas stages 3-4 are referred to as ________.

Question

Quizplus · Accepted Answer

Sleep stages 1-4 are collectively referred to as non-REM sleep, while stages 3-4 are specifically designated as slow-wave sleep due to the high amplitude, low frequency delta waves that are characteristic of these stages. REM sleep, also known as paradoxical sleep, occurs after non-REM sleep and is characterized by rapid eye movements and vivid dreaming. However, these options are not interchangeable.

Sleep Stages 1-4 Are Termed ________, Whereas Stages 3-4 Are