Positive correlations between VGEF genotype (number of C alleles) and regional ABV. The results shown were obtained using a threshold of threshold‐free cluster enhancement (TFCE) of P < 0.05, based on 5,000 permutations. The color represents the strength of the TFCE value. The results were corrected at the whole‐brain level. In the left panels, regions with significant correlations are overlaid on a “single subject” T1 image from SPM8. In the right panels, regions with significant correlations are overlaid on the mean of preprocessed images acquired from those subjects used to create the template. Significant correlations were found in the anterior midline areas and bilateral temporal areas. Note that only part of the whole brain was scanned and analyzed, as can be seen in the right panel.