hi all
       i used bbregister my functional map (i have to inform you that the 3D volume to which i want to superimpose my functional map as an overlay is obtained using recon-all with notalairach option), before running i was asked to add a flag (use --bold, --dti, --t2, or --t1); i chose --bold, the result is a vollume named vol0000.nii.gz (which i attached to this mail) then i used mri_vol2surf on the result of bbregister. the result is a file named cor-001.nii. i tried to load it as an overlay using tksurfer but nothing was loaded and an error was generated :

mri_read(): couldn't determine type of file /mnt/winlinux/fs/cor-001
surfer: couldn't load /mnt/winlinux/fs/cor-001.
 If you were trying to load a functional volume, make sure
you selected the right registration method, and if necessary,
that the registration file exists.
If you were trying to load a volume-encoded value file,
make sure it has the same number of values as this surface
does vertices (166454).

thanks a lot for your help

De: Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Objet: Re: [Freesurfer] overlay question
À: "LAOUCHEDI MAKHLOUF" <laoumakhl@yahoo.fr>
Cc: freesurfer@nmr.mgh.harvard.edu
Date: Jeudi 16 février 2012, 16h59

yes, use bbregister to register your functional maps, then mri_vol2surf to sample them onto the surface and load them in tksurfer.

cheers
Bruce
On Thu, 16 Feb 2012, LAOUCHEDI MAKHLOUF wrote:

> hi all
>        excuse me for this "simple question" but i am quiet new to freesurfer
> (i use it just for the parcellations).  i've some functionnal maps (i've
> used spm for that) that i want to use as an overlay on the pial surface of
> the subject. is there an easy way to do it
>
> thanks
>
>


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