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
The inability to perceive the texture and shape of an object occurs in lesion of 
Select and explain. 
A. Spinoreticular tract, B. Nucleus cuneatus, C. Lateral spinothalamic tract, D. Nucleus gracilis
B: Nucleus cuneatus
Answer: B: Nucleus cuneatus 
Explanation: Damage to the dorsal column-medial lemniscus pathway below the crossing point of its fibers results in loss of vibration and joint sense (proprioception) on the same side of the body as the lesion. Damage above the crossing point result a loss of vibration and joint sense on the opposite side of the body to the lesion. Ref: guyton and hall textbook of medical physiology 12 edition page number:691,692,693