MCQ – 48950 Leave a Comment / Uncategorized / By amit18289 Question Delta waves on EEG are recorded in: A. REM B. NREM – 1 C. Awake state D. Deep sleep Show Answer [ads id=”53026″] Correct Answer � D Explanation Ans. D: Deep sleep. Delta waves are predominant in N3 (formerly called stage 3 and 4) of NREM. This is characteristic of a deep sleep, also referred to as slow-wave sleep. (Delta waves for Deep sleep) Share this:TwitterFacebookLike this:Like Loading...