Histograms of expression quantitative trait loci enrichment analyses for Strict|All dataset. The gray histogram distributions represent the null distribution created by 1,000 lists of randomly ascertained SNPs drawn from the 1 M array platform and conditioned on minor allele frequency. The black dot represents the actual count of SNPs annotated as eQTL present in each tissue in the Strict|All Ancestry analysis. Significant enrichment of parietal eQTL (P <0.001), but not cerebellar (P <0.872) or LCL (P <0.110) eQTL was identified in the Strict|All dataset. eQTL: expression quantitative trait loci; LCL: lymphoblastoid cell line; SNP: single nucleotide polymorphism.