Dear CONN users,

In the ICA results summary tools, you can correlate your ICA components to the template components provided by CONN, such as the Default Mode Network.

I am wondering if someone has any tips on how to perform similar correlations between seed-to-voxel T-maps and other spatial templates. Is there a function in CONN or some MATLAB code that could implement this?

Ideally, I would like to create a correlation matrix visualising the similarity between the T-maps from different seeds and templates.

Best,

Andreas

Dear Andreas,

Assuming that the different T-maps & templates all have the same reference space & voxel-sizes, you could do that using something like:

   myfiles = {'file1.nii','file2.nii','file3.nii'};
   vols = spm_vol(char(myfiles));
   data = reshape(spm_read_vols(vols),[],numel(vols));
   data(isnan(data)) = 0;
   R = corrcoef(data);

The resulting variable R contains the matrix (3x3 in this example) of spatial correlation coefficient values between each pair of files specified in "myfiles" 

Hope this helps
Alfonso

Originally posted by Andreas Voldstad: