Together with Simon Fisher and Amanda Tilot, we just submitted a biorxiv pre-print on how genetic variation through our evolutionary history impacted modern human brain structure. Interesting findings include that variation present within human-specific regulatory elements present in the developing cortex, prior to birth, have a strong impact on adult brain structure. And, alleles with evidence of selective pressure over very recent time scales (in evolutionary history) have impacts on specific brain regions, including those involved in spoken language and visual processing. Read more about this work here: https://www.biorxiv.org/content/10.1101/703793v1.