Individual and family medical and dental insurance plans are insured by Cigna Health and Life Insurance Company (CHLIC). In Arizona, individual HMO plans are insured by Cigna HealthCare of Arizona, Inc. Group health insurance and health benefit plans are insured or administered by CHLIC, Connecticut General Life Insurance Company (CGLIC), or their affiliates (see a listing of the legal entities that insure or administer group HMO, dental HMO, and other products or services in your state). Group Universal Life (GUL) insurance plans are insured by CGLIC. Life (other than GUL), accident, critical illness, and disability plans are insured or administered by Life Insurance Company of North America, except in NY, where insured plans are offered by Cigna Life Insurance Company of New York. All insurance policies and group benefit plans contain exclusions and limitations. For availability, costs and complete details of coverage, contact a licensed agent or Cigna sales representative. This website is not intended for residents of New Mexico.
EPs are recordings of the nervous system’s electrical response to the stimulation of specific sensory pathways (., visual, auditory, general sensory). In tests of evoked potentials, a person’s recorded responses are displayed on an oscilloscope and analyzed on a computer that allows comparison with normal response times. Demyelination results in a slowing of response time. EPs can demonstrate lesions along specific nerve pathways whether or not the lesions are producing symptoms, thus making this test useful in confirming the diagnosis of MS. Visual evoked potentials are considered the most useful in MS.