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Figure 13.
Interespecies comparisons between macaque
and human cerebral cortex. A, 3-D surface
reconstructions and a flat map of the macaque monkey (case 79-0; Drury
et al., 1996a). The surface is colored to delineate the different
cortical lobes, and shaded regions on the flat map
indicate cortex buried within various sulci (abbreviations are a subset
of those listed for Figure 5 (see Appendix), except that
AS stands for arcuate sulcus; PS, the principal sulcus; and HF, the hippocampal fissure). The
extent of different lobes in the macaque is based on designations by Bonin and Bailey (1947) and Felleman and Van Essen (1991). Instead of
making a cut along the V1/V2 boundary, as has been done for most
previous cortical flat maps of the macaque (e.g., Van Essen and
Maunsell, 1980; Drury et al., 1996a), a cut was made along the
horizontal meridian representation in V1 (cf. Van Essen, 1997) to
correspond better to the human flat map. Scale bars in A
(and C) apply to the flat maps but not the 3-D views.
B, 3-D reconstruction and cortical flat map of the
Visible Man, modified from Figure 3. The more darkly
shaded sulci in A and B are
likely to correspond to one another, because they contain cortical
areas that are known or likely to be homologous (see Results).
C, Cortical areas in the macaque, according to the
partitioning scheme of Felleman and Van Essen (1991). Note that the
macaque map includes 3 cm2 of hippocampus and other
archicortical and paleocortical structures, all limbic regions that
were not included in the Visible Man reconstruction. As a basis for
comparing surface geometry, we used the same indices as in Figure 4 and
determined that the macaque cortex has about one-fourth of the
intrinsic curvature of human cortex (ICI = 14 vs 55 for Visible
Man) and one-third of the folding (FI = 160 vs 510 for Visible
Man). D, Visual areas and functionally specialized visual regions displayed on the right hemisphere map of the Visible Man
(adapted from Fig. 12D).
