Which Sensory Distinction is Not Encoded by a Difference in Neuron

Question

Which sensory distinction is not encoded by a difference in neuron identity?
A)white and red
B)red and green
C)loud and faint
D)salty and sweet
E)spicy and cool

Accepted Answer

Loud and faint sounds are not encoded by a difference in neuron identity. Instead, the amplitude or strength of the sound waves is encoded. The other choices involve different wavelengths of light (A and B), different taste receptors (D), and different temperature sensations (E), all of which are detected by specific types of neurons.