VEP (visual evoked potential)

A Visual Evoked Potential (VEP) is a test that measures the electrical activity in the brain in response to visual stimuli, such as flashing lights or patterns. During the test, small electrodes are placed on the scalp near the occipital lobe, which processes visual information. When you look at the visual stimulus, your eyes send signals through the optic nerve to the brain; the VEP detects these signals and records their speed and strength. This helps doctors assess how well your visual pathways are functioning, especially useful for diagnosing conditions like multiple sclerosis or optic nerve problems.