Hello Doug,

Yes this mail was quite difficult to write, so I resume :
First, I did a thickness analysis on Freesurfer
Then, with the clusters found, I draw ROIs and extracted the statistical values (command : creation of .label and mris_anatomical_stats-l......label-t rh.thickness-b-f .../stats/...stats ....rh). Finally, I made correlations and multiple regressions (with the values for thickness but also surface area, volume, meancurv obtained via the command above) on the software "R". I only found a significant correlation with the surface.

My question is: can I correlate a behavioral score with SURFACE values when I found these values thanks to a THICKNESS analysis?

I hope it's clearer,

If not do not hesitate to ask me again,

Thanks in advance.

Marine

De : Lisa Delalande <delalande.lisa@outlook.fr>
Envoyé : vendredi 31 mars 2017 11:42
À : Freesurfer support list
Objet : RE: [Freesurfer] FreeSurfer : About ROI analysis

Hello Doug,

My question is: can I correlate a behavioral score with SURFACE values when I found these values thanks to a THICKNESS analysis?

I hope it's clearer,

If not do not hesitate to ask me again,

Thanks in advance.

Marine

De : freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> de la part de Douglas Greve <greve@nmr.mgh.harvard.edu>
Envoyé : mardi 28 mars 2017 16:58
À : freesurfer@nmr.mgh.harvard.edu
Objet : Re: [Freesurfer] FreeSurfer : About ROI analysis

Hi Marine, I'm having a hard time following what you are trying to do. It sounds like you have done a thickenss analysis where you have found some clusters, but after that I'm not sure what you are asking. Please elaborate.

doug

On 3/28/17 6:07 AM, Lisa Delalande wrote:

Hello,

As a PhD student, I often use Freesurfer software and more precisely QDEC. A great question arises in connection with my last work. After drawing ROIs, I extricated values thanks to a " .levels" and a creation of a "stat" folder for each participant (aparcstat2table).

My question is : can I make a correlation between a behavioral score and the value of "average SURFACE" obtained for each participant thanks to the command above-mentioned considering that my ROI has been drawn from clusters detected with a correlational analysis between THICKNESS (and not surface) and a behavioral score on QDEC ?

Many thanks in advance for your assistance, and I am looking forward to hearing from you.

Marine
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