Khaitovich P, Muetzel B, She X, Lachmann M, Hellmann I, Dietzsch J, Steigele S, Do HH, Weiss G, Enard W, Heissig F, Arendt T, Nieselt-Struwe K, Eichler EE, Pääbo S.

Genome Res. 2004 Aug;14(8):1462-73 doi:10.1101/gr.2538704

Regional patterns of gene expression in human and chimpanzee brains.

Individual variations are stronger than regional variations in cortex. Developmental genes are implicated in inter-regional, but not inter-species variations. Differential interspecific variation correlates with recent chromosomal duplications.