On Tue, Aug 02, 2011 at 02:12:35PM +0100, John Ashburner wrote:
> For many fMRI studies, the limitation in using your second method is
> the coregistration between the fMRI and anatomical data. Distortions
> preclude accurate rigid-body alignment, which means that normalising
> transforms determined from the anatomical data may not work so well
> for the functional data.
Hey John,
I have observed too that using the T1 doesn't always improve results,
because of coregistration errors, and I think that have heard you
mentionned that sometimes you normalize the EPI directly. Do you have any
reference either showing that coregistration is a limiting factor in some
situations, or detailling the 'other' route: normalization (hopefully
using Dartel) of the EPI?
Cheers,
Gael
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