This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Propeies of alpha waves are all of the following except: September 2009 
Select and explain. 
A. It is most marked in the parieto-occipital area, B. It has a frequency of 8-12 Hz, C. Frequency is decreased by low glucose level, D. Seen in REM sleep
D: Seen in REM sleep
Answer: D: Seen in REM sleep 
Explanation: Ans. D: Seen in REM sleep