A handheld Ojemann cortical stimulator was used to retract cerebral parenchyma while stimulating descending white matter tracts to prevent damage to white matter tracts involved with motor function

This technique concurrently gave the neurosurgeon a free hand to perform other tasks (e.g., subpial aspiration).

We anticipate this technique would be most useful resecting tumors where there is a concern for injury to white matter tracts associated with functional tissue.