Hi,
I have a simple question about using spm99 for the first level
analysis: Is there any difference between creating contrast images for each
subject separately with separate matrixes vs grouping all sessions (or
subjects) together as one subject in one matrix and then creating the
contrast images for each subject in Results? This is in preparation for a
second level random effect analysis (t test).
Thanks for your help.
Ben
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Benjamin Xu, Ph.D.
ERB/NINDS
The National Institutes of Health
5N250 Building 10 Center Dr.
Bethesda, MD 20892
Phone: (301)435-8542
Fax: (301)402-2871
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