Hi FSL users,
I have a question regarding the FOV of my individual data sets and how the
images are combined at the group level. The FOV I am using for individual
subjects cuts off varying amounts of the top and bottom of the brains of
each subject. When I combine subjects in higher-level analyses, how does FSL
statistics cope with the fact that only 10 out of 20 subjects may have some
of the very top or bottom slices? Of course this is going to affect the
likelihood of finding active voxels in those slices. Is there a weighting
criterion, i.e. if at least 15 out of 20 subjects have that voxel active, it
gets included in the group analyses?
Thanks,
Anna-Maria
Anna-Maria D'Cruz
University of Illinois at Chicago
Center for Cognitive Medicine
Department of Psychiatry
912 South Wood St., Suite 235 (M/C 913)
Chicago, IL 60612
Phone: (312) 355-5651
http://ccm.psych.uic.edu
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