VEP is a diagnostic test used to check the optic nerve pathway which runs from your eyes to your brain. A doctor may recommend that you go for a VEP test when you have had changes in your vision that can be due to problems along the optic nerve pathway.SSEP, or Somatosensory Evoked Potential, is a test showing the electrical signals of sensation going from the body to the brain and spinal cord. The signals show whether the nerves that connect to the spinal cord are able to send and receive sensory information like pain, temperature and touch.A visual evoked potential, or visual evoked response (VEP or VER) is a test that measures the integrity of the optical pathway from your eyes to the occipital lobe of your brain. It is used to determine if there is any damage to this pathway that may be causing certain visual symptoms.

The VEP test costs very little to perform–about $2 per tests when taking into account the disposable electrodes, the prepping gel and the conductive paste. The VEP takes approximately 10 minutes to get the patient set up and to perform the test on both eyes, much better than some of the field tests.The VEP measures the time that it takes for a visual stimulus to travel from the eye to the occipital cortex. It can give the doctor an idea of whether the nerve pathways are abnormal in any way. … This means that it takes a longer time for electrical signals to be conducted from the eyes, resulting in an abnormal VEP.Evoked potential test and results. Evoked potential tests measure the time it takes for the brain to respond to sensory stimulation either through sight, sound, or touch. Doctors use the test to help diagnose multiple sclerosis (MS) and other conditions that can cause a person’s reactions to slow.