Boris,
You can use MRIcro (www.mricro.com) to draw your an ROI of
the hippocampus by tracing the hippocampus from your structural
images but why do you want to use this for normalisation?
Do you mean spatial normalisation or signal/intensity normalisation?
I 'm assuming you mean signal normalisation in which case
you can enter the mean intensity value from your ROI
as a confounding covariate in your analysis.
Emmanuel
Boris Suchan wrote:
>
> Dear SPM list,
> does anybody has experience with a ROI based normalisation approach? I
> saw a poster on the CNS meeting in New York and was wondering how to
> make this kind of analysis with SPM. So how can I define a ROI like the
> hippocampus to use this for further normalisation?
> Any help?
> Many thanks in advance
> boris
--
________________________________________________________________________
Emmanuel A Stamatakis PhD
Centre for Speech and Language
Department of Experimental Psychology
University of Cambridge
Downing Street
Cambridge CB2 3EB
U.K. http://csl.psychol.cam.ac.uk
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