Division of Neurosurgery   
Phone: 217-545-8000
FAX: 217-545-0253 
Email: neurosurgery@siumed.edu 
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Intracranial EEG Monitoring

The intention of this procedure is to gather more precise data on areas of the brain not obtainable by conventional scalp EEG.  

By placing electrodes over the surface of the brain or within the brain more details are available as to where seizure activity occurs. By knowing this the neurosurgeon can be more confident in removing the diseased tissue without removing functioning brain tissue. Electrodes are placed by either a craniotomy or burr holes. A craniotomy is a surgical procedure where the skull is opened by a piece of bone being removed, burr holes are small holes drilled into the skull. Both the insertion and removal of the electrodes are performed in the operating room by a neurosurgeon. Following placement electrodes are connected to continuous EEG equipment and seizures are monitored in the intensive care unit. Once sufficient seizure activity has been successfully captured the electrodes are surgically removed. Depending on the facility Epilepsy surgery may coincide with electrode removal thereby completing the surgical procedures. If not then another date will be set for the surgical intervention requiring a second hospitalization.