The files in the mult-comp-cor folder are generated from a simulation, so the simulation has to be run with larger FWHMs. In the end, I think that 25 is probably too much smoothing. You can start to see low spatial frequency artifacts when you smooth too much. I usually use 10-15
doug
On 02/24/2014 11:38 AM, Yan
g, Daniel wrote:
Dear FreeSurfer Experts,
In the folder, $FREESURFER_HOME/average/mult-comp-cor/fsaverage/rh/cortex, there are fwhm01-fwhm30. I am wondering why there is no fwhm31+ and how to generate one if needed? (Sorry for two questions)
I used a fwhm=25 in qdec and see the error message when doing cluster analysis:
ERROR: cannot find $FREESURFER_HOME/average/mult-comp-cor/fsaverage/lh/cortex/fwhm36/...
I also don't understand why mri_glmfit-sim looks for fwhm36 when I specify fwhm25?
Sorry for the multiple questions!
Best, Daniel
-- Daniel (Yung-Jui) Yang, Ph.D. Postdoctoral Researcher Yale Child Study Center New Haven, CT Tel: (203) 737-5454 E-mail: _yung-jui.yang@yale.edu_
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