When testing your patient for two-point discrimination, you should
a. first touch one fingertip with a sharp object and then a second fingertip, and assess if she can accurately report the sequence.
b. simultaneously touch two points of one of her fingers with sharp objects, and assess if she can distinguish the two points.
c. simultaneously touch a finger on her right hand and the corresponding finger on her left hand with two sharp objects, and assess if she can distinguish the two points.
d. simultaneously touch a fingertip with two sharp objects, remove one stimulus, and then assess if she can detect that one point has been removed.
B
Two-point discrimination is tested by simultaneously and closely touching various parts of the body with two identical sharp objects. Start with the objects far apart and continue to move the two points closer together until the patient is unable to distinguish two points. Begin with the tip of a finger. Other areas that can be tested include the dorsum of the hand, the tongue, the lips, the feet, or the trunk.
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