Hi, I have two groups and two time points (pre and post). I want to investigate group*time interactions in an fMRI task taken at both time points.
I have run all the subjects through first level FEAT analyses in FSL as well as the longitudinal Freesurfer pipeline. I'm thinking of registering the FEAT first level analyses to the each corresponding longitudinal time point first. Then, if I want to do a group level analysis, can I still use the longitudinal two stage process or is this just designed for structural measures ( http://freesurfer.net/fswiki/LongitudinalTwoStageModel)? Or, would you suggest another approach for group analysis for longitudinal fMRI data taking advantage of Freesurfer? Thanks, Mike Kranz
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