The TCATT contains 3-dimensional commissural connections of 5 different parietal cortical areas (A), including the paracentral lobule, inferior parietal lobule, superior parietal lobule, supramarginal gyrus, and angular gyrus. (B) The 2-dimensional representation of these tracts in the sagittal view (x=0, 10, 20, 25, 35), coronal view (y= −55, −50, −45, −40, −35), and axial view (z=20, z=25, z=30, z=40, z=55).