This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of Psychiatry, Subject name: Psychiatry
[{'content': 'Hallucination which occur at sta of sleep are known as ? \nSelect and explain. \nA. Hypnogogic hallucination, B. Hypnopompic hallucination, C. Jactatio capitis nocturna, D. Reflex hallucinations', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hypnogogic hallucination - occur while going to sleep. Hypnopompic hallucinations - occur while getting up from sleep Jactatio capitis nocturna or rhythmic movement disorder is a neurological disorder characterized by involuntary movements, usually of head and neck, before and during sleep. In reflex hallucinations, stimulus in one modality results in development of hallucination in another modality', 'role': 'assistant'}]