Visual evoked potentials (VEPs), also sometimes referred to as visual evoked responses (VERs), are the electrical responses recorded from the occipital area of the brain.

Although a traversing checkerboard pattern is most commonly used to record VEPs, in some circumstances a simple flash of diffuse light may be used instead (flash VEPs). This is commonly done in assessing visual function in babies and young children, who are not able to focus on a normal checkerboard pattern. Flash VEPs may also be used in the further assessment of people who have not shown any response to the standard checkerboard pattern.