An Electroneurodiagnostic/EEG Technician uses specialized equipment to record patients brain waves & other electrical impulses. EEG technologists use various devices to aid in the evaluation and examination of the nervous system. These devices receive and record the electrical impulses produced by the brain or other parts of the nervous system. Characteristic changes in the nerve impulses can determine whether a patient has an organic basis for a mental or behavioral problem, such as a tumor or Alzheimers disease. The devices can also diagnose particular diseases such as neuropathies (disease of the nerves), myopathies (diseases of the muscles), epilepsy, or stroke. These tests can evaluate the condition of critically ill patients, to determine the presence of cerebral death, and help assess the probability of a patient recovering from a coma.