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Evoked Potential Tests
Evoked Potential Tests
This type of test measures the speed at which the brain receives and interprets messages. Electrodes are placed on the scalp to pick up electrical activity in the brain, and you are then given either a visual or auditory (sound) stimulus. People with MS may have a longer interval between the stimulus and the brain’s response, indicating that nerve signals are not getting through as quickly as they should.
Evoked potential tests are non-invasive and completely painless. They have become less important since the introduction of MRI, and are not always used.