I don't think you have to register them since they started in register. One problem will be that if you are dividing based on area you may get a given ROI divided into a different # of components in different subjects.

On Wed, 21 Jan 2009, Jürgen Hänggi wrote:

Dear FS experts

We divided the parcellations aparc.a2005s into about 1000 smaller parcellations and would like to compare the cortical thickness of these parcellations across subjects.

Due to the fact that the parcellations aparc.a2005s are in the native space of each subject I am wondering whether I have to register the divided parcellations in order to be sure that the finer parcellations (1000) are in spatial correspondence across subjects.

If I have to spatially register them, how to do this?

Thanks in advance Reggards Jürgen

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Juergen Haenggi Ph.D. (Dr. des.) Division Neuropsychology Institute of Psychology University of Zurich Binzmuehlestrasse 14, PO Box 25 8050 Zurich, Switzerland 0041 44 635 73 97 (phone office) 0041 76 445 86 84 (phone mobile) 0041 44 635 74 09 (fax office) BIN 4.D.04 (office room number) j.haenggi[at]psychologie.uzh.ch (email) http://www.psychologie.uzh.ch/neuropsy/ (website) http://www.juergenhaenggi.ch (private website)

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