These tests record the brain's electrical response to visual (VER), auditory (BSAER), and sensory stimuli (SER). They are used to diagnose many diseases of the spinal cord and brain. Common symptoms that are assessed with evoked potentials include dizziness, numbness and tingling, and certain visual disorders.
Here's what is involved with each of the tests:
You do not have to prepare for these tests in any special way. Each test takes about an hour.