visual evoked potentials

Electrophysiological signals recorded from the visual cortex in response to visual stimulation. VEPs assess the functional integrity of the visual pathways from the retina via the optic nerves to the occipital cortex. Electrodes placed on the scalp measure the electrical activity elicited by flash, pattern reversal, or pattern onset/offset stimuli. Abnormalities in VEP waveform latencies or amplitudes can indicate dysfunction within the visual system.