[pymvpa] Questions about mvpa preprocessing...

J.A. Etzel jetzel at artsci.wustl.edu
Fri Apr 15 14:54:34 UTC 2011

I've often performed MVPA after spatial normalization. As with most 
things, whether it's a good idea depends on your analysis goals: if you 
will perform an across-subjects analysis some sort of spatial 
normalization is required; if only within-subjects, it's optional.

As a plug, I wrote about some of these issues in my tutorial paper: 
Etzel JA, Gazzola V, Keysers C. 2009. An introduction to anatomical 
ROI-based fMRI classification analysis. Brain Research 1282:114-125. 
There are quite a few other introductory papers, too - check the citations.

I'd need more details for the resting state question. It can be very 
nice to include a "control" (should be chance) classification in an 

good luck,

On 4/15/2011 9:40 AM, Roberto Guidotti wrote:
> Dear all,
> I'm not sure if this is the right place to ask these questions:
> Is it right to coregister fMRI images to standard atlas and then perform
> the MVPA analysis? If yes, there are some other issue to take care in
> the post analysis operation?
> Is important that the resting state, if included in classification, has
> bad classifier accuracy?
> I'm sorry if these are trivial question and if I'm off topic.
> Thank you
> RG
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