In which sleep state does the electroencephalogram recording most closely resemble that of the awake brain, because depolarization of some neurons?
A) Non-REM Stage 1
B) Non-REM Stage 2
C) Non-REM Stage 3
D) REM
E) None

Question

Quizplus · Accepted Answer

The electroencephalogram (EEG) recording in REM sleep most closely resembles that of the awake brain because the depolarization of some neurons during this stage leads to high-frequency, low-amplitude beta waves. The other non-REM stages (1, 2, and 3) show progressively deeper and slower brain waves, with stage 3 showing the slowest waves resembling deep sleep. Therefore, the EEG recording in these stages is different from that of the awake brain. None is not a valid answer as there is a stage of sleep that resembles the EEG of an awake brain.

In Which Sleep State Does the Electroencephalogram Recording Most Closely