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: Medicine
Which of the following is not affected by a lesion in posterior column of spinal cord: 
Select and explain. 
A. Romberg's sign, B. Temperature sense, C. Vibration sense, D. Ataxia
B: Temperature sense
Answer: B: Temperature sense 
Explanation: Answer is B (Temperature sense): Temperature sense is a feature of the spinothalamic tract and not the posterior column. Vibration & Joint position sense are transmitted the posterior column. Altered joint position sense may lead to Ataxia and a positive Romberg's sign.