Figure 2: The principal mode of shape variation for brain structures with significantly heritable shape in the GSP sample.
From: Multidimensional heritability analysis of neuroanatomical shape

Each structure is represented with a sample-specific population average, on which average shapes at the two extremes (±2 s.d.) along the first principal component (PC) of the shape descriptor (−2 s.d., blue; +2 s.d., red) are depicted. Anatomical orientation is indicated with embedded coordinate axes. A, anterior; I, inferior; L, left; P, posterior, R, right; S, superior.