Dear Stefan,
> for group analysis I have 20 datasets, 15 with 30 slices
> and 5 with 25 sclices. Can I mix in group analysis
> datasets with different image blocks ?.
Given that the sequences are not too different, the only issue I can
think of, why this is probably not a good idea is that you could have
different TRs. In SPM, you temporally smooth the design matrix with the
same filter, i.e. if your time/scan changes over scans in the design
matrix, you would smooth e.g. the 15 with a different filter than the 5
data sets.
Hope this helps, Stefan
--
Stefan Kiebel
Functional Imaging Laboratory
Wellcome Dept. of Cognitive Neurology
12 Queen Square
WC1N 3BG London, UK
Tel.: +44-(0)20-7833-7478
FAX : -7813-1420
email: [log in to unmask]
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