Hi Doug
Thank you very much for your reply. I am doing these analysis in each subject’s self space, and my ROI is a handmade cortical label in ascci format. In this case, would the indices be the vertex Id in the label file? also, instead of f=MRIread('f.nii.gz’); can I use “sig.nii.gz” to get the threshold of each voxel (sig.nii.gz is the result of selxavg for a specific contrast)?
Thanks Mona
On Mar 20, 2020, at 10:49 AM, Douglas N. Greve dgreve@mgh.harvard.edu wrote:
Do you mean all the voxels separately? I don't think I have anything, but you can do it in matlab with something like seg = MRIread('seg.nii.gz'); indices= find(seg.vol == IndexOfYourROI); f = MRIread('f.nii.gz'); fmat = fast_vol2mat(f); froi = fmat(:,indices);
this assumes taht f.nii.gz and seg.nii.gz are in vox-for-vox registration
On 3/18/2020 5:13 PM, Nasiriavanaki, Zahra wrote:
Hi all
Is there any command for extracting the fmri activation from all voxels in an ROI? I know I can use funcroi-config, funcroi-sess and funcroi-table-sess to extract the average activation in a specific ROI from a specific contrast. But what if I want to extract the values of each voxel within that ROI?
I appreciate any comments on this.
Thanks Mona _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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