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: Psychiatry
In EEG, alpha wave denotes: September 2009 
Select and explain. 
A. REM sleep, B. Awake and eye closed and mind wandering, C. Sleep with eyes closed, D. Mental activity
B: Awake and eye closed and mind wandering
Answer: B: Awake and eye closed and mind wandering 
Explanation: Ans. B: Awake and eye closed and mind wandering