Look at the original sig map. This will be signed (blue and red/yellow), with blue being neg, red/yellow being positive. doug
Antonella Kis wrote:
Dear Doug,
I am forwarding Bruce answer to my question since he directed me to you.
I need some help regarding my FA and non-FA group analysis study. I am not using tracula. I used the dt_recon and I have done the registration for my FA data on the cvs space using the mri_cvs_register. I used the GLM group analysis method after I concatenate FA from individuals into one file and used mri_glmfit-sim with the option grf as you recommended me some time ago:
mri_glmfit-sim \ --glmdir Group_Analysis.glmdir \ --grf 2 neg \ --cwpvalthresh .025 \ --overwrite
to cache the significant clusters after multiple comparisons so I have the uncorrected and corrected significant map but I don't know how I can see if my FA is increasing or decreasing in controls group versus patients group.
I will appreciate any help/suggestion.
Thank you. Antonella
----- Forwarded Message ----- *From:* Bruce Fischl fischl@nmr.mgh.harvard.edu *To:* Antonella Kis atorok9@yahoo.com *Cc:* "freesurfer@nmr.mgh.harvard.edu" freesurfer@nmr.mgh.harvard.edu *Sent:* Thursday, January 12, 2012 11:16 AM *Subject:* Re: [Freesurfer] FA and non_FA group analysis
Hi Antonella
I think this is a question for Doug.
cheers Bruce On Thu, 12 Jan 2012, Antonella Kis wrote:
Dear Bruce,
Once again many thanks for helping.I am not using tracula. I used
the dt_recon and I have done the registration for my FA data on the cvs space using the mri_cvs_register. I used the GLM group
analysis method after I concatenate FA from individuals into one
file and used
mri_glmfit-sim \ --glmdir Group_Analysis.glmdir \ --grf 2 neg \ --cwpvalthresh .025 \ --overwrite
to cache the significant clusters after multiple comparisons so I
have the uncorrected and corrected significant map but I don't know how I can see if my FA is increasing or decreasing in controls
group versus patients group.
Please advise me.
Thank you. Antonella
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