> We are interested in overlaying functional (fMRI)activations onto the
> hippocampal region, with as little loss of detail as possible. To this
> end, I have used unsmoothed unnormalized functional images, coregistered to
> my high resolution structural image. I have run model estimation and
> looked at the results. They seem to be pretty sensible....I know this is
> not the normal way to proceed in SPM, but does it present any particular
> problems I should be aware of?
Only the usual one that is due to the distortions in fMRI data, meaning that
a really good rigid registration can not be attained between fMRI and
structural data.
Best regards,
-John
--
Dr John Ashburner.
Wellcome Department of Cognitive Neurology.
12 Queen Square, London WC1N 3BG, UK.
tel: +44 (0)20 78337491 or +44 (0)20 78373611 x4381
fax: +44 (0)20 78131420
http://www.fil.ion.ucl.ac.uk/~john
mail: [log in to unmask]
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