Visual evoked potential

A Visual Evoked Potential (VEP) is a diagnostic test that measures how the brain responds to visual stimuli, such as flashing lights or patterns. During the test, electrodes are placed on the scalp to record electrical signals produced by the visual pathways from the eyes to the back of the brain. This helps doctors assess whether the visual pathways are functioning properly and can identify problems like optic nerve damage or disorders affecting visual processing. VEPs are useful in diagnosing conditions such as multiple sclerosis and evaluating visual problems when the cause isn't clear.