Functional Mapping Through Cortical Stimulation


What is functional mapping through cortical stimulation ?

This type of mapping is intended to localize precisely areas of brain that are crucial for language, motor, sensory, and visual functions.

What happens during mapping through cortical stimulation ?

In this method, electrical current is applied for a few seconds to a small area of the brain surface, either through implanted intracranial electrodes or via a probe placed on the brain’s surface by the surgeon intraoperatively. While the current is on, specific functional testing is carried out to identify done which functions are compromised by the stimulation, thus creating a “map” of the brain’s surface that is used to determine the areas that are safe to remove. Testing can be done either at the bedside or in the operating room with the patient awake.