Hi,
> This works great. However, when I extract raw time-courses with MarsBar and
> average the raw response across events and subjects, the raw and fitted
> waveforms seem to differ by quite a bit.
Sorry, I am not quite sure what you mean. If the events overlap, then
the SPM model will attempt to estimate the effect of this overlap and
adjust for it, in which case you'd expect some difference between the
fitted events and the raw averaging. Also, if you model for the event
(such as HRF) is different from the actual response, SPM can't pick
this up and the averaging and fitted responses will look different.
Is that what you meant?
Matthew
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