Two Point Discrimination
Examination Technique:

• use either calipers or a opened paper clip with two parallel ends.
  
  
• demonstrate to the patient with eyes open by applying either one or two points of the stimulus to the fingerpad.
  
  
• ask the patient to close their eyes.
  
  
• deliver the stimulus and ask the patient to report whether they feel one or two points.

Normal Response:

• normal values over the fingerpads are 2-4 mm.