That is the right way to map it to the volume. Does the activation disappear in the volume? If you want to go to the fsaverage surface, you should use mri_vol2surf and spec "--trgsubject fsaverage"

doug

caspari@clipper.ens.fr wrote:

Hi!

This is maybe something very easy: but I am not sure whether I did it the right way: To map the activation from the subject anatomy to the fsaverage volume I used the sig.nii file out of my contrast folder (humBod-vs_humObj) together with the command mri_vol2vol:

mri_vol2vol --mov ../all_days_ss2/bold/all_days_ss2/humBod_vs_humObj/sig.nii --reg ../all_days_ss2/bold/register.dat --o HB-HO-in-tal.2mm_ss2.nii --tal --talres 2

(my functional image is also 2mm isotropic)

Can this be done like that? When I remapp the volume activation of my single subject (which has been remapped by the above command onto fsaverage space?) onto the fsaverage surface, and visualize it with tksurfer, actually my main activation (ROI of interest) nearly dissappears, but all the rest looks quite similar- how can this be?

I'm not sure whether I proceed in the right way. would be great If someone could help me out!

Natalie xxx

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