Dear Anne,
Remove the 'spm' prefix from the names of your fiducials. This should
only be used for the default locations which are already in MNI space.
Best,
Vladimir
On 2 Jun 2012, at 17:07, Anne Urai wrote:
> Dear SPM,
>
> I'm working with EEG datasets that have been acquired with a BioSemi
> 64-electrode 10-20 system. After loading the datasets, preprocessing
> and preparing (with the default fiducials), I want to load the data
> into the 3d source reconstruction GUI and make a forward model for
> subsequent beamformer analysis.
>
> I can select the individual sMRI and create the head model. However,
> if I click the 'Co-register' button I do get the graphics window of
> the head shape with electrodes and fiducials on there - but there is
> no menu to select the fiducials and register them onto the sMRI.
> I've also tried to do the coregistration via spm_eeg_inv_datareg but
> I still can't get to the point where I actually select fiducials.
>
> Also, when I've specified an individual file for EEG sensor
> locations (from Brainsight) I can select three fiducials (spmnas,
> spmlpa and spmrpa) but after that I can't figure out how to align
> these points onto the sMRI.
>
> However, I can proceed to the forward model and the resulting images
> look fine.
> Any suggestions as to how to get to the options 'type' 'select' or
> 'click' for coregistration before I proceed to the forward model?
>
> Thanks!
> Anne Urai
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