John,
I have a question regarding your latest comment.
> removing confounding signal from your data. The assumption that allows
> the adjustment step to be performed seperately from the rest of the statistics,
> is that the estimated motion parameters are in no way related to the paradigm.
> This is clearly not the case in many fMRI experiments.
I thought that the 2nd order motion effects were not estimated
separately, but were rather entered as a covariate of no interest
into the same model used to estimate effects of interest. Is this
incorrect?
Thanks,
Eric
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