Dear SPM experts,
May you please guide me? I'm in a hurry!
1. I don't have any information about the design matrix and regressors, should I create a SPM.mat in this way(select SPM->Stats->fMRI model specification (Design Only)), or not necessary?
2. should I create xY structure like the below code? but I don't know how should I create X0? should I use X0 from the SPM.mat file?
xY(i).u – the timeseries (Y)
xY(i).name –the name of the region (a string)
xY(i).X0 – a matrix of uninteresting effects to be regressed out of the timeseries. One row per MRI volume and one column per effect.
xY(i).sess – the run or session of this timeseries (e.g. set this to 1 if there’s only one run)
Thanks a lot,
Soroor
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