Hi Cindy, : 1. did you check the individual labels to make sure they landed in about the right place? 2. do not use smoothing for this

Also, you'll probably want to work on the stack of data in fsaverage space. This file is called y.mgh and it is created when QDEC runs. You can extract the data you want from it with

mri_segstats --slabel fsaverage lh youlabel.label --avgwf tableout.dat

The tableout.dat will have a value for each subject. When you map the label back to the individual subject space, then it does change a little bit and this could be contributing to the differences (esp if this is a small label).

doug

On 05/30/2012 09:36 PM, Cynthia Elisabeth Krafft wrote:

Hello,

Sorry for the newbie question. I completed a group analysis in QDEC and drew a ROI, which I saved and mapped to the individual subjects. I'm interested in getting text output of the surface area for each individual within that ROI. Here is an example of the command that I ran for one person:

mris_anatomical_stats -l lh.X.area.label -b -nsmooth 15 subject lh white

The problem is that when I plot these values against the variable that I originally put in to the analysis (for which I got significant results in this ROI in QDEC), it doesn't look like there is anything there, so I guess I did something wrong or my interpretation is wrong.

I'd appreciate any insight!

Thanks,

Cindy

---

Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer