Fig 4. Composite z-score map demonstrating correlation between FA values and GCS scores in TBI group. The z value is calculated based on the R value from the corresponding pixel. Norminal z = 6, cluster size = 20, corrected P < .01. The voxels with significant correlation are coded with color and overlaid on an anatomic image. Some of these voxels are contiguous in space and represent specific WM structures. Four such groups of voxels are marked with rectangles in different colors. These 4 groups (clusters) are (blue) CC and IFO; (red) PLIC; (green) SFO and CS; and (yellow) SLF, SFO, and CS.