Sensory system exam cont. discriminatory sensations

Question 1

Point localization 
(Topognosis)

Answer 1

touch where dr. touched w/ end of neurotip, paperclip, toothpick

Question 2

Sharp v. Dull

Answer 2

multiple points on each extremity

Question 3

Stereognosis

Answer 3

identify familiar objects by touch

Question 4

Graphesthesia

Answer 4

identify #/letters traced

bilaterally

Question 5

Barognosis

Answer 5

difference bt 2 objects of different weights

Question 6

2 point discrimination

Answer 6

determine the smallest area in which 2 points can be separately perceived.

Question 7

Double simultaneous stimulation

Answer 7

touch pt. on each side individually, then the same points bilaterally.

• extinction- only 1 side is felt
• displacement- 1 side is felt normally, & the other is displaced toward midline
• Synesthesia- 1 side is felt normally & the other side is a vague burning.