Fig. 3

a-g In patient 2, the lesion occupied the posterior part of left paracentral lobule. The activation areas elicited by right foot movements reorganized obviously at the anterior part of the paracentral lobule and SMA (in green) compared with that elicited by left foot movements in contralesional hemisphere (in paille). The functionally seeded CST fiber tract in ipsilesional hemisphere originated from anterior part of the paracentral lobule and SMA then traveled backwards to the anatomical CST pathway (in yellow), where the fiber was close to the lesion. h Postoperative DSA shows radical resection. i and j No cortical positive stimulation point around the lesion (i) and low amplitude subcortical positive stimulation points before the lesion (j)