Figure 13.

The benefits (stars) of a high resolution (0.7mm isotropic) T1w image for reconstructing the white matter surface in thin, heavily myelinated cortical regions such as the early visual cortex in the calcarine sulcus (A) and the early somatosensory cortex in the central sulcus (B). The red surface contour is the output of standard recon-all on the downsampled 1mm isotropic T1w data and the green surface contour is after adjustment with the original 0.7mm isotropic T1w data. In general, the white matter surface is placed too superficially in these regions (Type A error, Glasser and Van Essen 2011).