Hi John,
>> I am doing a VBM type analysis with FA maps between two groups using
>> 2sample t-test in SPM2.
>
> This isn't really a VBM analysis. I would really consider it as applying
> SPM
> to FA images.
>
> Is there a reason why you want the values sampled from the original image
> -
> rather than the spatially normalised image? That would make life much
> easier.
Why I want the values sampled from the original image is that I want to
see whether the mean FA values are comparable to what other reserachers
have reported in those regions where there is significant differnces
between the groups. And I think that the FA values in the normalised space
will not be comparable due to different normalisation procedures
developed by different groups. This is basically for checking the data I
am dealing with.
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