Dear FS experts
I tried to read out in each subject the surface area values of some clusters derived from a group comparison. For that purpose, I used mri_surf2surf and mris_anatomical_stats.
Everything worked fine, but in some clusters the direction of the effects reversed. A first guess was that this might have to do with the smoothing that we applied to the group comparison.
Therefore, I smoothed the individual area files to get the smoothed surface area in each subject using the following command:
mris_anatomical_stats -a area_p01.annot -t rh.area -nsmooth 15 -f $s/stats/rh.aparc.a2005s.stats $s rh
But the surface area of this smoothed data gives the same values as the unsmoothed data.
Any idea what is wrong here?
Thanks in advance Regards Jürgen
PS: sorry for posting this message twice, but the first post did not appeared in the archives
---------------------------------------------------------------------------- Jürgen Hänggi, Ph.D. 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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Juegen, can you send the full terminal output? Also, you can try explicitly smoothing the file with mri_surf2surf and then run anatomical stats on the smoothed file. doug
Jürgen Hänggi wrote:
Dear FS experts
I tried to read out in each subject the surface area values of some clusters derived from a group comparison. For that purpose, I used mri_surf2surf and mris_anatomical_stats.
Everything worked fine, but in some clusters the direction of the effects reversed. A first guess was that this might have to do with the smoothing that we applied to the group comparison.
Therefore, I smoothed the individual area files to get the smoothed surface area in each subject using the following command:
mris_anatomical_stats -a area_p01.annot -t rh.area -nsmooth 15 -f $s/stats/rh.aparc.a2005s.stats $s rh
But the surface area of this smoothed data gives the same values as the unsmoothed data.
Any idea what is wrong here?
Thanks in advance Regards Jürgen
PS: sorry for posting this message twice, but the first post did not appeared in the archives
Jürgen Hänggi, Ph.D. 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)
This e-mail (and any attachment/s) contains confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden.
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