Neurodiagnostics is the study and recording of activity in the brain and nervous system to determine if they are functioning correctly. St. Mary's Neurodiagnostics Department assists physicians in the diagnosis of conditions including epilepsy, vascular disease, multiple sclerosis, movement disorders, head trauma and many more. All studies are performed by Registered Technologists.

Electroencephalograph (EEG)

An EEG records the electrical activity of the brain. Sensitive monitoring equipment records the activity through electrodes placed on the patient's scalp. EEGs assist physicians in the diagnosis of a variety of neurological problems from headaches and dizziness to seizure disorders, strokes, and degenerative brain disease. The EEG is also used to look for organic causes of psychiatric symptoms and disabilities in children and to determine irreversible brain death.

Evoked Potential (EP)

The EP records electrical activity from the brain, spinal nerves, or sensory receptors as they respond to stimulation introduced as part of the test. How long the response takes helps evaluate a number of different problems, including spinal cord injuries and hearing loss. 

Intraoperative Monitoring

St. Mary's Neurodiagnostics Department monitors patients during some types of surgery, giving the surgeon additional information about brain and nerve function during the operation. Evoked potential and electromyography monitoring may be used during neurosurgery or orthopedic surgery, to help evaluate the nerve pathways of the area being operated on.

Diagnosing Sleep Disorders

Polysomnographic technologists use a combination of neurodiagnostic and physiological techniques to monitor a patient's sleep during a night in St. Mary's Sleep Lab. Recording and studying brain and nerve activity, breathing patterns, and all other body activity help physicians diagnose and treat sleep disorders such as insomnia, sleep apnea, restless leg syndrome, and narcolepsy. For more information: St. Mary's Sleep Lab. 

Newborn Hearing Screening

The Neurodiagnostic Department tests the hearing of every baby born at St. Mary's Hospital. Auditory pathway studies help identify hearing problems early.