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Figure 1. 3D rendering of left and right surface areas and color projection of differences in cortical thickness as measured by voxel-based morphometry. Left-right mirrored volumes images were subtracted from the grey matter thickness volumes in their normal orientation. A whole brain, voxel-by-voxel t-test analysis was then performed on the difference volumes. The difference volume was thresholded at t = 4.00, p < .001; thus, all colors reflect t-values that exceed 4.0. Variation in color intensity reflects the absolute t-value.
Figure 2: Eight transverse views of the difference volume and associated t-values at different levels along the dorsal-ventral plane of the cortex. Color intensities reflect the absolute t-values (see Figure 1 captions for description).
Figure 3: Eight coronal views of the difference volume and associated t-values at different points along the anterior-posterior axis. Color intensities reflect the absolute t-values (see Figure 1 captions for description).
Brian B. Avants ( UPenn ) and William Hopkins ( Georgia State University , http://neuroscience.gsu.edu/13890.html )