yes, this sounds ok. I usually set up a whole processing pipeline
starting with preprocessing and ending with contrast definition for each
subject, but running just the contrast manager batch is fine, too.
If your sessions are just repeated measurements, then you can use the
"replicate/create per session" feature and re-use a per-session
Am Donnerstag, den 26.06.2008, 10:51 -0400 schrieb Marc Berman:
> Hi Volkmar,
> Thanks so much. You know, I was having a lot of
> trouble finding the Tasks button, but now I see it in the upper right of
> graphics window. I guess I can just define a general contrast structure
> there, and then just apply it to all of my subjects. I think I will do
> so by running the spm_jobman function repeatedly for each of my
> subjects, using the same contrast template. I'm guessing that I define
> the contrast for the whole experiment and not by session?
> Thanks again,
> Volkmar Glauche wrote:
> > Dear Marc,
> > have a look at TASKS->BATCH->Stats->Contrast Manager. If your design
> > matrices do not vary across subjects, then you should be fine with this.
> > If your designs vary (e.g. some conditions are not present for all
> > subjects) you may want to try the condition/session based contrast type.
> > However this is quite difficult to use and not flexible enough to cope
> > with all situations.
> > Volkmar
> > Am Donnerstag, den 26.06.2008, 10:21 -0400 schrieb Marc Berman:
> >> Hi,
> >> I looked through the SPM archives and there appears to be a way to
> >> batch contrasts in SPM 5 without using the contrast manager. However, I
> >> don't see a lot of information on how to implement this. Basically, I
> >> would like to define 20 or so contrasts and be able to apply them to by
> >> 30 subjects without having to type in all 20 contrasts for each subject.
> >> Any help would be greatly appreciated.
> >> Thanks,
> >> -Marc
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