Dear Roman,
Do you mean that you have intracranial electrodes and record from the
sources directly?
If so you should assign the 'LFP' type to those channels (and only
those that you want to include in DCM, make the rest of the channels
'Other'), choose the 'LFP' option in the 'Spatial model' part of the
DCM GUI and provide just names for the sources with no coordinates.
Vladimir
On 4 Jan 2010, at 12:57, Roman Rodionov wrote:
> Dear Vladimir,
>
> It seems (from the messages while SPM8 performs calculations) that the
> latest version of SPM8 automaticaly projects EEG electrode
> coordinates to
> the scalp.
> How could I switch off this option of the automatic projection in
> those
> situations when the location of the sources is avaliable prior to
> DCM analysis?
>
> Thanks,
> Roman
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