A test known as two-point discrimination threshold measures:
A)the type of sensory neuron serving a region of skin.
B)the type of mechanoreceptor being stimulated.
C)the amount of pressure we can sustain before feeling pain.
D)the relative size of receptive fields.

Question

Quizplus · Accepted Answer

Two-point discrimination threshold measures the distance between two points that can be perceived as separate. This is dependent on the density and size of receptive fields in a region of skin, which is related to the innervation density of sensory neurons in that area. Therefore, the correct choice is D, which describes the relative size of receptive fields.

A Test Known as Two-Point Discrimination Threshold Measures