Dear SPMers,
I have some questions about the best way to perform a random
effects analysis. In reading prior e-mails, it seems that there might be
multiple approaches. One approach seems to involve
a) computing a single t-contrast image for each subject
AND
b) entering the group of contrast images from all subjects into a
Basic Stats model
I tried this approach using the One-way ANOVA and One Sample
t-test BAsic Stats models. Are either of these correct?
Once a basic stats model is chosen and other parameters are
specified, SPM creates a new SPM.mat file. When I load this new file
using the results button, a contrast manager appears. How do I enter the
contrast which will tell me whether the t-contrast that I calculated for
each subject is significant ACROSS subjects? Is it an F-test?
Thanks,
:> Daniel Weissman
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