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What are subdural grids?

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What are subdural grids?

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A – A subdural grid is an array of up to 64 contact points from which we can record the brain’s electrical activity. It is placed on the surface of the brain through a craniotomy incision. The grid can also be used to map out speech and motor areas to help guide the surgeon in the resection. A circle of skull (craniotomy) is temporarily removed in order to place grid electrodes.

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