Hello all,
I was wondering what the best way to account for subject specific nuisance factors is when running a dual regression analysis. Is it preferable to regress out motion parameters first and running the group ICA on this clean data, or to include these subject specific motion regressors after the first stage of DR? I guess my main question is whether doing one versus the other affects the group ICA in a significant way.
I've also seen discussion that regressing out spikes may introduce some problems to the group ICA step. If I would like to regress out particular volumes due to motion or RF spikes, would this change the recommended process above?
Thank you for your help!
Jeremy
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