This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': "Parkinosn's disease results from a lesion in the \nSelect and explain. \nA. Striatum, B. Pituitary, C. Thalamus, D. Hypothalamus", 'role': 'user'}, {'content': "Answer: A \nExplanation: (A) Striatum Chorea is characterized by rapid, involuntary dancing movements.> Athetosis: Continuous, slow, writhing movements is due to globus pallidus lesion> Hemiballismus: A lesion in subthalamus often leads to sudden flailing movements of an entire limb, a condition called hemiballismus.> Parkinson's disease: Lesions of the substantia nigra leads to the Parkinsonism.", 'role': 'assistant'}]