[Freesurfer] converting cortical thickness maps to NIFTI files

Hello,

I'm interested in converting my cortical thickness maps to NIFTI files. Can you give me more information about how to do so?

Also, is it possible to analyze freesurfer cortical thickness maps in AFNI (this is why I'm asking the question re conversion to NIFTI)? It seems as though my model is too complex to use something like qdec or fsgd (a 2x3 ANOVA with 3 covariates-1 discrete and 2 continuous). I see that I can specify my own design matrix to analyze the data with this model...but then don't see any info on what such a matrix should look like or how to proceed after that.

Any help on either of these topics would be greatly appreciated!

Thanks in advance Courtney Gallen

Courtney Gallen Post-baccalaureate IRTA Neuroimaging Research Branch National Institute on Drug Abuse (IRP) 251 Bayview Blvd Suite 200 Baltimore, MD 21224 Tel: (443) 740-2631