What are evoked potentials?

Evoked potentials test and record how quickly and completely the nerve signals reach the brain. Evoked potentials are used because they can indicate problems along nerve pathways that are too subtle to show up during a neurologic examination or to be noticed by the patient. The disruption may not even be visible on MRI exam.

These tests can be helpful in making the diagnosis of multiple sclerosis (MS) and other neurological disorders. Evoked potentials are used to show abnormalities in the function of nerve pathways that can be caused by neurological disorders.