Fig. 2.

Myelin maps in 5 species based on the T1w/T2w ratio. Primate data are from population-average surface-aligned data. Note that the chimpanzee and macaque surfaces are “hyperinflated” in order to reveal myelin patterns in buried regions such as the intraparietal sulcus. A single color palette applies to all 4 primates, but is scaled according to percentile ranges within each species rather than to absolute values. Mouse images are based on volumetric analysis of a single animal; adapted with permission from ref. 21. Data are available at https://balsa.wustl.edu/97vwD.