I assume that you refer to Coregistration here. The idea is that
coregistration tries to estimate how one image should be moved in order to
align it with another. The end result is that the header of the moved image
is updated in order to reflect its new position. If there are other images
that you want to remain in alignment with the source image, then these need
to be specified.
So, if you have an anatomical image and a whole series of functional images,
then the easiest thing to do is to move the anatomical image into alignment
with all the functional data.
The alternative would be to hold the anatomical image still and move mone of
the functional images into alignment with it. However, if you do this, then
you will also need to specify all the other functional images that should
also be moved in the same way. It's simple really.
Best regards,
-John
On Monday 30 June 2008 21:28, Yune Lee wrote:
> Dear SPM5 experts,
> I'm novice for the SPM5 and just wondering why the mean image (or any
> functional image) should be selected for the reference image and the
> structural image is for the source image?
> I looked at the SPM5 manual and it says
>
> Reference Image is assumed to remain stationary (sometimes known as the
> target or templateimage), while the source image is moved to match it.
>
> I feel like it should be opposite such that mean image for source and
> structural image for reference. Also, does it matter if I do opposite.
> Sorry about silly question, but any tip would be greatly appreciated.
>
> Thanks,
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