Hi David,
I think the transformation/warping that Featquery applies are dependent on the contents of the reg directory. If you used FLIRT in your first level analyses, it will apply that transformation when moving a mask from standard to native space. Similarly, if you use FNIRT in your first level analyses, it will apply those warping parameters when going from standard to native space.
The thresholding of that mask defaults to 0.5, which keeps the mask approximately the same size. You can control this with the -i option:
-i : affect size of resampled masks by changing post-interpolation thresholding (default 0.5)
Cheers,
David
On Sep 30, 2011, at 9:05 AM, David Soto wrote:
> Hello,
>
> a couple of quick questions please
>
> how does featquery move MNI masks into the individual subject space? is it just by means of FLIRT? or does it use FNIRT?
>
> does featquery always binarise the mask? In using MNI mask to interrogate individual activation does featquery perform any
> other interpolation?
>
> Cheers
>
> David
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