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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Dev Psychopathol. 2012 Nov;24(4):1427–1442. doi: 10.1017/S0954579412000818

Figure 2.

Figure 2

The distribution of expression levels (log2 fragments per kilobase of exon per million mapped fragments [FPKM]) of genes detected in Broca area of Brain 70 (the upper diagram) and the same area in Brain 40 (the lower diagram). Genes with FPKM of 0 are excluded. This plot shows that there are few genes that have an FPKM between 0 and 0.001; the latter corresponds to approximately −10 on the logarithmic scale. The threshold of 0.001 was used as a minimum FPKM for determining expressed genes.