Hello Alfonso,

Thank you for the wonderful workshop in Boston, it was really informative and helpful!

I have few questions that I need some help with:

• As we discussed, there was one reviewer who wanted connectivity matrices (like the one in the file attached) for the ROI-to-ROI analyses, can you let me know the matlab code on how to get these connectivity matrices?
• I am getting the following error everytime I run the denoising step. It stops at a specific subject during Step 5/6- preprocessing voxel to voxel covariance. I have checked the space on the USB drive and there is about 1.3 TB on it and my Mac has 16GB of RAM (so I don't think it's an issue of space). Do you know what it is about?

Error using fseek
Invalid file identifier. Use fopen to generate a valid file identifier.
Error in conn_get_slice (line 16)
fseek(handle,4*sum(V.size.Nv(1:slice-1))*V.size.Nt,-1);
Error in conn_process (line 1682)
[y,idx]=conn_get_slice(Y,slice);
Error in conn_process (line 30)
case {'preprocessing_gui','denoising_gui'}, conn_disp(['CONN: RUNNING DENOISING STEP']); conn_process([1.5,2,6:9],varargin{:});
Error in conn (line 5907)
else conn_process('denoising_gui'); ispending=false;
Error in conn_menumanager (line 120)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});

       3. I have a question regarding the ART toolbox. Is there a way to analyze between-group differences in stimulus-correlated motion (SCM)? I only know how to look for stimulus-correlated motion at individual level, but how do I analyze it at group level and compare the 2 groups on the amount of SCM? I posted my question in the ART toolbox forum but didn't get any response. Hopefully, you will know the answer.

Thanks again!