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Pediatric Epilepsy Center
Epilepsy Surgery Program
Developmental Disabilities Center (DDC)
Vagal Nerve Stimulator
Information gained from previous, non-invasive VEEG monitoring is used to determine what surfaces of the brain must be covered with the electrode sheets (grids) or electrode strips. Rarely, a preliminary surgery is required to better define which regions of the brain are responsible for the seizures. In these cases, strips of electrodes are fed through small holes in the skull to accomplish broad coverage over the brain's surfaces. Coverage to define the focus of the seizure is broad so that all borders of the focus can be delineated. Once the site of origin of the seizures has been determined, the electrode sheet is used to map brain function.
Tests during cortical resections include INTRAOPERATIVE CORTICAL STIMULATION FOR BRAIN MAPPING. This is the type of monitoring typically associated with epilepsy surgery. It may be done either during the surgical procedure on an anesthetized child, or as part of the surgical admission, at the bedside. The motor and speech cortices of the brain are stimulated to confirm their identity or to delineate regions important in higher cortical functioning. This stimulation is done using the previously implanted electrodes. Each of the electrodes on the grid is stimulated to determine which part of the cortex of the brain is responsible for speech and movement.
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