Hi,
>> Have you looked at your images with FSLView? You should check whether the GM_mod_merg_s2 image contains non-zero >values in your voxels of interest for all of the timepoints in the image. This is the first thing I would check.
>
> I'm not sure I've check it properly, but what it seems to me is that I have non-zeros values in my voxels of interest for the GM_mod_merg_S2. I don't know what you mean by "all the timepoint" in the image though, sorry.
If you load this image into FSLView then you can look at different “timepoints” by changing the number in the “volume” box. Each volume represents the image from a different subject. You need to check that you have non-zero values in a particular voxel across all the different subjects (i.e. volumes or timepoints).
>> Another problem could be if you do not have enough memory on your machine to process all the data. We recommend a >minimum of 2GB of memory.
>
> I have 16GB of memory and a fair configuration for processing imaging data... So I guess this is not the problem.
That seems fine.
> What could I do next ?
See above.
All the best,
Mark
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