Re: [Freesurfer] ROI-based fixed effect analysis

2011-03-29 Thread Douglas N Greve
Hi Qi Zhu, sorry for the delay (always a good idea to just repost if a few days go by). To answer your question, yes you can do a FFx analysis that way, ie, average the gamma and gammavar across the ROI, then t=gamma/sqrt(gammavar) and use the DOF from the dof.dat file in the mri_glmfit output

[Freesurfer] ROI-based fixed effect analysis

2011-03-29 Thread Qi Zhu
Hi, Sorry for posting again. I just want to get the average ces and cesvar values across subjects (fixed effect) for a specific ROI, and then run some statistics on them. Can I just average the gamma and gammavar that in the osgm folder after I ran the voxel-based ffx group analysis in my group da

[Freesurfer] ROI-based fixed effect analysis

2011-03-24 Thread ye xiao
Hi everyone, Is there any way to do ROI-based fixed effect group analysis in Freesurfer? I want to get the average ces and cesvar (fixed effect) in a specific ROI. Can I just average the gamma and gammavar that in the osgm folder after I ran the voxel-based ffx group analysis in that ROI to get th