Neurodiagnostic Laboratory

Our Neurodiagnostic Lab uses state-of-the-art equipment and Registered Technologists to perform a variety of diagnostic procedures. Services provided:

  • Electroencephalograms (EEG)
  • Nerve Conduction velocity (NCV)
  • Electromyography (EMG)


An EEG is a non-invasive procedure that traces the brain’s electrical activity. During the procedure, electrodes are place on the scalp to study brain function. An EEG may be performed:

  • To diagnose epilepsy and determine what types of seizures are occurring. EEG is most useful and important test in confirming a diagnosis of epilepsy;
  • Identify the location of a suspected brain tumor, inflammation, infection, bleeding, head injury, or disease in the brain, such as Parkinson’s disease;
  • Evaluate periods of unconsciousness or dementia;
  • Help predict a person’s chance of recovery after a change in consciousness;
  • Confirm or rule out brain death in a person who is in a coma; or
  • Monitor brain activity while a person is receiving general anesthesia during surgery.


An NCV and EMG are complementary electrodiagnostic tests that work in combination to measure the electrical activity in nerves and muscles. Results are used to detect, process, and record electrical muscle activity in order to aid in the diagnosis of neuromuscular disease.

NCV is a test to evaluate the ability to send an electrical impulse through motor and sensory nerves of the human body. During the test patients will have surface electrodes attached on various areas, along the contour of the nerves, to record the electrical impulse.

EMG tests the electrical activity of the muscles. This involves the physician placing a very thin needle into various muscles.

EMG/NCV can help diagnose many muscle and nerve disorders, including:

  • compression neuropathies, such as carpal tunnel syndrome;
  • peripheral neuropathies;
  • radiculopathies;
  • nerve lesions;
  • amyotrophic lateral sclerosis (Lou Gehrig’s disease);
  • polio;
  • spinal muscular atrophy;
  • Guillain-Barre syndrome;
  • ataxias; and
  • myasthenias.

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Liberty Hospital | 2525 Glenn Hendren Drive | Liberty, MO 64068 | 816.781.7200