Dear experts (and apologies if this is a double post),
We have conducted a story listening paradigm in fMRI between two groups
(control & patient). The task have a blocked design. I want to examine
the functional connectivity in my main condition, for that I compare two
ROIs from activation maps (connectivity pattern) of my fMRI task.
However the activation maps are different between my two groups (1500
voxels vs 1000 voxels). Thus, to calculate the functional connectivity
in my ROIs, these should be:
1/ The ROIs created in all population (mean mask in patient + control).
2/ The ROIs created in each group (patient vs control)
3/ The common ROIs to the two groups (the overlapping between two
groups)
4/ An individual ROI for each participant?
Thank you for your help!
Frederic
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