Image Based Question – 73530

In the given image, wave B represents:

A. REM

B. NREM

C. Quiet wakefulness

D. Awake

Correct Answer » B Explanation

Ans: B. NREM

• EEG in “B” shows high amplitude, low frequency waves as compared to waves A and C and EOG and EMG are nearly flat when compared to A. In C also they are flat.
• In NREM stage-4 delta waves are seen. So high amplitude, low frequency (delta waves) is seen in NREM.
• In quiet wakefulness and awake state, alpha waves (high frequency, low amplitude) are seen. In REM sleep, beta waves (high frequency, low amplitude) are seen.