| > > if during realignment of fMRI time series data, you encounter one scan
which is very displaced
| > > (ie more than 20mm) on one axis, which might disrupt further stages of
| > > the analysis, is it acceptable to (a) remove this scan from the analysis
| > > and (b) replace it with, for example, the mean image?
An alternative would be to include an additional column in your design matrix
that is all zeros, except for a one in the row corresponding to your offending
scan.
Best regards,
-John
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