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. Author manuscript; available in PMC: 2009 Jan 1.
Published in final edited form as: Neuroimage. 2007 Sep 5;39(1):10–18. doi: 10.1016/j.neuroimage.2007.08.042

Figure 4.

Figure 4

Reliability of measurements of absolute magnitude of cortical thickness within left lateral parietal cortical region of interest (ROI). For this analysis, the area of the parietal cortex in which thickness correlates with Trails B performance in the Test dataset was used to generate an ROI (left), which was applied in an unbiased manner to extract mean thickness from each of the four datasets. The correlations between these parietal ROI cortical thickness measures (y axis) and visuomotor/set-shifting speed (x axis) are all highly significant (p < 0.001) and have remarkably similar slopes and magnitudes, indicating that thicker parietal cortex is associated with better (faster time) performance. Test Siemens 1.5T (red), Re-test Siemens 1.5T (green), GE 1.5T (magenta), 3.0T Siemens (blue).