This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2019, Subject name: Physiology
[{'content': 'Waves seen in EEG during stage 4- NREM period of sleep is: \nSelect and explain. \nA. Alpha, B. Beta, C. Delta, D. Theta', 'role': 'user'}, {'content': 'Answer: C \nExplanation: - REM sleep shows - b waves - so, called as paradoxical sleep. (because even though the person is asleep, the waves of ale wakefulness-b waves are recorded)- NREM sleep - 4 stages* Stage I - Superficial stage - eyes closed & person is in sleep latency - a waves are seen* Stage II - Sleep spindles & large K - complexes are seen * Stage III - Theta waves are seen. * Stage IV - Deeper stages of sleep - delta waves are seen', 'role': 'assistant'}]