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. Author manuscript; available in PMC: 2014 Oct 15.
Published in final edited form as: Neuroimage. 2013 May 11;80:105–124. doi: 10.1016/j.neuroimage.2013.04.127

Figure 15.

Figure 15

The Conte69 (Glasser and Van Essen 2011) myelin maps before (A) and after (B) correcting a systematic Type B artifact where the pial surface was being placed too deep. In this artifact, lightly myelinated superficial cortical layers were being excluded in many subjects by the default recon-all algorithm (in FreeSurfer versions 4.5, 5.0, and 5.1) leading to artifactually higher myelin map values within the ellipse. Use of grey-matter specific normalization and the T2w surface eliminate the problem.