Hi Xi-Nian,

As Doug said, they don't do the same thing. The method in the paper uses a different kind of interpolation to allows the preservation of the amount of area, whereas mris_preproc achieves the same globally using a Jacobian correction. The results aren't expected to be identical at the vertex level or for small regions.

An implementation of the method we proposed in the paper is available for Octave and/or Matlab at http://brainder.org/download/areal It works fine, but beware that it's quite slow.

All the best,

Anderson

2013/5/13 Douglas Greve greve@nmr.mgh.harvard.edu

Hi Xi-Nian, it does not do the same thing, but it does something similar. Anderson found that it gave similar results in a lot of cases, but he has found some differences. If he's still following the FS list, maybe he can comment.

doug

On 5/11/13 9:53 PM, Xinian Zuo wrote:

Hello Doug,

I am doing some association studies between functional measures and surface area. In using mris_preproc, there is an option --area. Does this do sth similar to that as Winkler et al. (2012)?

Winkler et al., 2012. Measureing and comparing brain cortical surfacearea and other areal quantities.

Thank you very much.

Xi-Nian Zuo, Ph.D of Applied Mathematics (http://lfcd.psych.ac.cn) Google Scholar Citations: http://scholar.google.com/citations?user=a3-gVGMAAAAJ&hl=en

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