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Neurodiagnostic Services at DMH


Neurodiagnostic testing evaluates systems associated with the central and peripheral nervous systems and their function. Neurodiagnostics are used to assist providers in determining an accurate diagnosis.

Our diagnostic testing facility is equipped with state-of-the-art technology for the evaluation of neurologic and neuromuscular disorders. All diagnostic studies are interpreted by board certified neurologists with specific training in the areas of testing. We are consistently going above and beyond minimum quality requirements to provide the most accurate results, while accommodating patient needs.

We are located on the 3rd floor near the Sleep Center and across from the Lung Center. Please stop and register at outpatient registration prior to arriving for your test.

Tests performed:

  • Electroencephalogram (EEG)-The recording of ongoing electrical activity of the brain. Used in diagnosing epilepsy and other neurologic conditions.
    • Patient preparations- It is very helpful to record sleep, so the patient may be asked to stay awake extra hours the night before testing. Please avoid benzodiazepines such as Versed, Valium and Klonopin as they may affect the test.
    • Testing time 90mins.
  • Electroencephalogram (EEG) Long Term Monitoring – A recording of the ongoing electrical activity of the brain.  It is useful in diagnosing seizures and other neurological disorders.
    • Prep same as EEG above.
    • This test lasts 24 hours. You will be able to move around the room up to 30 feet.
  • Nerve Conduction Studies/ Electromyography (NCVS/EMG)- Gauges the electrical activity of muscles. Can identify the cause of muscle weakness, spasms, and pain in the extremities.       Also, evaluates numbness and tingling and other symptoms related to neuropathy and pinched nerves.
    • Testing time 60mins.
  • Visual Evoked Potential (VEP)- This test involves stimulation to the visual pathway of the brain. Obtains evidence for Optic Neuritis and/or Demyelinating diseases (MS) diagnosis.
    • Testing time 30mins.
  • Brainstem Auditory Evoked Potential (BAEP)- Earphones are used to stimulate the auditory pathway to the brain. It will identify abnormalities of the inner ear, brainstem, and/or the acoustic nerve.
    • Testing time 45mins.
  • Somatosensory Evoked Potential (SEP)- stimulation of nerves within the extremities to identify abnormalities which interfere with the travel of the stimulus over the peripheral nerves and/or spinal cord.
    • Testing time 60mins.
  • Videonystagmography (VNG)- A study of the inner ear and central nervous system (CNS) through the recording of eye movements, head orientation, and caloric stimulation.
    • Preparation- No food or drink 3 hours prior to testing. No alcohol, antihistamines, anti-dizziness medications, tranquilizers, or benzodiazepines 3 days prior to testing.
    • Ears should be checked by ordering physician to make sure eardrums are visible and not occluded. If eardrum is not visible patient will have to see family physician to have ears cleaned prior to testing.
    • Testing time 90mins.