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Hi - it would be hard to combine these posthoc - so yes you would need to analyse the two datasets together as a single one, in order to end up with all data on a single skeleton.

Cheers.




On 7 May 2014, at 19:21, Didac Vidal-Pineiro <[log in to unmask]> wrote:

Hi!!
I performed TBSS with two independent samples (generating two different skeletons). What should I do if I pretend to compare the results from both analyses (i.e. in terms of spatial distribution)? One idea, I presume, is to use the FMRIB58_FA mean FA image and its derived skeleton instead of mean sample skeleton in the postreg step for both samples (though it is not strongly recommended). However I would like to know if, somehow, is possible to align the masks (and the apply such transformations to the results) after running main analyses.

Thank you very much in advance


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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director,  Oxford University FMRIB Centre

FMRIB, JR Hospital, Headington, Oxford  OX3 9DU, UK
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