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 rod receptor potential differs from other sensory receptors in that it shows 
Select and explain. 
A. Depolarization, B. Increased conductance of calcium, C. Increased conductance of sodium, D. Hyperpolarization
D: Hyperpolarization
Answer: D: Hyperpolarization 
Explanation: Vision is the only sense where activation of receptors leads to hyperpolarization Ref: Ganong 25th ed/page 179