Hi Stefan,
We are trying to run a DCM on ERP data that was collected using 128
channels (biosemi).
We successfully did the whole preprocessing and design specification.
However, for the DCM analysis:
we realize that we do not have an MRI structural scan for each
subject, neither do we have an exact coordinates for the sensors, but
we were using a conventional 10-20 cap in which Cz was located in the
center point, equally distance from the two ear lobes and from the
nasion-inion.
Is there still a hope for us to be able to run a DCM model, or are we doomed?
thanks
Pia and Sanjay
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