<p>WM fiber pathways intersected by the rod were pooled across all N = 110 subjects and examined for a) the relative lengths (w<sub>ij</sub>) of affected pathways and b) the relative percentages of lost fiber density (g<sub>ij</sub>); c) the bivariate distribution of g<sub>ij</sub> versus w<sub>ij</sub> indicating that local fiber pathways were affected, <i>e.g.</i> relatively short pathways proximal to the injury site, as well as damaging dense, longer-range fiber pathways, <i>e.g.</i> innervating regions some distance from the tamping iron injury (see “<i>Calculation of Pathology Effects upon GM/WM Volumetrics</i>” for further details).</p
