Normal Sensory Exam ; Two-Point Discrimination

Two-Point Discrimination Two-point discrimination is tested by using calipers or a fashioned paper clip. The smallest and most dense sensory units are located in those areas that have the greatest somatosensory cortical representation. The patient should be able to recognize two-point separation of 2-4 mm on the lips and finger pads, 8-15 mm on the palms and 3-4 cm on the shins.