Dear DCM experts,
We have data from an event-related fMRI study, where the experimental
manipulation is a continuous parametric regressor.
We would like to inlcude not only the parametric regressor as modulatory input (B matrix) but also the manipulation perse regressor (same onsets and durations, but only on/off) as driving input (C matrix). However, SPM does not allow us to define a contrast soley on the later regressor. This would be necessary to assign the manipulation perse to to the driving input. Is there a way to implement this?
Thanks a lot,
Felix Wolff
University of Oldenburg, GER
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