I would average the R values across run
On 2/15/19 11:34 AM, Nasiriavanaki, Zahra wrote:
Dear Freesurfer experts
I have asked this question before and I really do appreciate if you could please reply whenever you had a chance.
I have been doing seed to seed connectivity analysis using fcseedcor. I have _multiple runs for each subject,_ and based on the fcseedcor help, I am supposed to average runs before comparing across subjects. So, does it mean I should average timeseries across runs?or Should I average the acquired r values? (because after running fcseedcor, separate r and p values are made for each run).
Thanks so much Mona
*From:* Nasiriavanaki, Zahra *Sent:* Thursday, February 7, 2019 5:39:39 PM *To:* freesurfer@nmr.mgh.harvard.edu *Subject:* Re: [Freesurfer] fcseedcor_multiple runs
Thank you so much for your reply.
Yes, It does make a separate r and p for each run.
But, I would like to have one correlation coefficient for each subject, so I can compare them to each other.
Based on help, I should average runs before comparing across subjects. My question is how should I average runs? Should average the .dat files? the r values?
Thanks
Mona
*From:* freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Greve, Douglas N.,Ph.D. DGREVE@mgh.harvard.edu *Sent:* Thursday, February 7, 2019 5:33:09 PM *To:* freesurfer@nmr.mgh.harvard.edu *Subject:* Re: [Freesurfer] fcseedcor_multiple runs Looking at the help, it looks like it will produce a separate file for each run for each session. Is that what you want?
On 2/1/19 9:41 AM, Nasiriavanaki, Zahra wrote:
Dear Freesurfers
Hi
I have been doing seed to seed connectivity analysis using fcseedcor.
I have multiple runs for each subject, and based on the fcseedcor help, I am supposed to average runs before comparing across subjects.
So, does it mean I should average all seed.dat files and the regressors (including vscf,wm,global waveform, mcprextreg) across runs?
I appreciate your time and consideration.
Thanks
Mona
*Zahra (Mona) Nasiriavanaki*
Postdoctoral Research Fellow
Martinos Center for Biomedical Imaging
Massachusetts General Hospital
149 13th Street, 149-2615
Charlestown, MA, USA, 02129
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