ABSTRACT
In visual evoked potential (VEP), the electroencephalographic (EEG) signals of the brain elicited by visual stimuli are recorded with cutaneous electrodes placed on the scalp in the occipital region. Unlike the EOG and different types of ERG which measure activities of the retina or the retinal ganglion cells, VEP is the only electrophysiologic test that assesses visual cortical activity. Standard for VEP recording has been established by the International Society for Clinical Electrophysiology of Vision (ISCEV) and is available on the ISCEV Internet website. The standard is reviewed every 3 years and published periodically. A summary of the standard is provided in Table 5.1.
