The normalization is done using non-linear surface-based (2D) registration to align the curvature patterns. See Bruce Fischl's 1999 HBM paper on spherical morphing doug

On 07/27/2014 09:05 AM, "Christoph Abé" wrote:

Hello together, I have a question regarding the -qcache command, which in addition to the surface smoothing is also used to resample the constructed surfaces to common space (for example the fsaverage template), necessary to run a Qdec group comparison on cortical thickness. My main question is, how the "resampling" is perormed. I would like to know, if the surfaces (depending on shape and brain size) are slightly altered or reshaped in order to match the template. Similar what one would expect when performing a (non-linear) normalization. Can somebody answer this question, or provide a reference where this method is explained in more detail? That would be fantastic. Thank you very much in advance, Leoni

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