This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood disorders, Subject name: Psychiatry
Reduced latency of REM sleep is a feature of 
Select and explain. 
A. Schizophrenia, B. Depression, C. Insomnia, D. Narcolepsy
B: Depression
Answer: B: Depression 
Explanation: Reduced latency of REM is typically seen in depression Insomnia and early morning wakening is also seen Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 604-607