External Email - Use Caution Dear Freesurfer Experts,
I have a very basic questions about creating subject-wise contrasts between runs Background Study with two runs per subject where each run corresponds two a different condition (i.e. Stimulation A (on - off) and Stimulation B (on - off). I performed the preprocessing and 1st levels stats in the native subjects space Questions * How can I obtain a within-subjects contrast between two runs (the Stimulation A vs. Stimulation B ) obtained in two runs within one session? * Can I obtain this within-subject contrast by staying in the native subject space? * Do I have to concatenate both runs and create a new parradigm file? Thanks for your support Sincerely Chris
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