Skip to main content
. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Neuroimage. 2010 May 20;52(4):1401–1409. doi: 10.1016/j.neuroimage.2010.05.016

Figure 2.

Figure 2

MRI scans with visual areas V1, V2 and V3 labeled. Data from two participants are shown on the two rows. The first column shows a sagittal slice of both subjects. In this slice V1 is seen to localize to the calcarine sulcus, with V2 presenting both above and below. The second column contains a coronal slice for the first subject. The participant displays a complicated asymmetric folding pattern in the calcarine, with the left hemisphere showing an “s” curve, and the right hemisphere having a flattened bottom. For the second participant in the bottom row, an oblique slice taken perpendicular to the calcarine sulcus is displayed (indicated by the green line on the sagittal slice). This participant displays a calcarine sulcus that conforms more closely to the cruciform model, but also demonstrates how extrastriate areas V2 and V3 do not conform to the model since they also have opposite surface orientations. The anatomy of these subjects illustrates the heterogeneity of the calcarine sulcus.