Dear SPMers,
I'm writing to ask your advice on the use of DARTEL in SPM8 for normalizing functional images that I am going to be using for PPI analysis.
It has been suggested to me to use DARTEL for normalization of the contrast images rather than the individual scans for the random effects analysis.
Do you think that this has any implications for PPI in terms of extracting first eigenvariate of seed region per subject in native space?? Do you think that it would be a good idea to smooth the images first? Is there anything else that i should be thinking about?
A very similar question has been asked before and no one has answered as far as I can see- any help would be greatly appreciated!!
Best wishes,
Sophie
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Sophie Green
PhD Student
Neuroscience and Aphasia Research Unit (NARU)
Zochonis Building, 3rd Floor
Brunswick Street
University of Manchester
Manchester M13 9PL
Tel: +44 (0)161 306 0451
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