Dear Venkat,
as the name implies the non-stationarity cluster correction is only relevant for cluster level statistics in order to prevent over- or underestimation of cluster sizes due to locally varying smoothness. There is no need (and no effect) to use this correction for voxel-wise statistics.
Best,
Christian
________________________________________
Christian Gaser, Ph.D.
Departments of Psychiatry and Neurology
Friedrich-Schiller-University of Jena
Jahnstrasse 3, D-07743 Jena, Germany
Tel: ++49-3641-934752 Fax: ++49-3641-934755
e-mail: [log in to unmask]
http://dbm.neuro.uni-jena.de
On Tue, 2 Oct 2012 18:00:37 -0400, Rajagopalan, Venkateswaran <[log in to unmask]> wrote:
>Hi,
>I would like to clarify the following
>
>I am wondering whether the Non-stationary cluster extent correction is applicable to only cluster level statistics or it also applies to voxel level statistics. Does one need to correct for non-stationary residuals while doing VBM analysis. We are looking at voxel-wise stats.
>
>
> Thanks
>Venkat
>
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