A Visual Evoked Potential (VEP) is a recording of the electrical signal at the optic centers of the brain following presentation of a stimulus. We use an alternating checkerboard pattern on a TV screen or a flashing light.
We record several squiggly lines which represent how fast and how appropriately the signal is travelling from each eye to the optic centers.
VEP’s are performed for many reasons, including:
Blindness
Optic neuropathies or atrophy
Demyelinating diseases
Visual perception
A VEP normally takes about ½ an hour, but is not uncommon to take up to an hour.
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