Left: Lateral view of an inflated right hemisphere (dark gray shows sulcal depths, light gray shows gyral crowns) showing ROIs used for tractography (primary auditory cortex, A1, in red; postcentral gyrus, the location of the primary somatosensory cortex, S1, in green). Deterministic tractography results in SR (middle, volume rendering with axial cutout at z = 1, coronal cutout at y = 67) and a gender- and age-matched control subject (right, axial cutout at z = −14, coronal cutout at y = 39). Individual yellow streamlines show the inferred location of fiber tracts between A1 and S1. The red arrowhead highlights the sparse and disorganized connections between A1 and S1 in the patient's lesioned right hemisphere.