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
[{'content': 'Which one of the following phenomena is closely associated with slow wave sleep \nSelect and explain. \nA. Dreaming, B. Atonia, C. Sleep walking, D. Irregular heart rate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Slow wave sleep events (Stage 3 & 4 NREM)\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Somnambulism\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Night terrors\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Nocturnal enuresis\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Bruxism\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Sleep talking', 'role': 'assistant'}]