Dear Johannes,
Of course, you can load a text file with the list of contact locations.
If you have imported SEEG recordings into your database: right-click on the channel file > Add EEG positions > Import from file.
If this is just for the display of the electrodes: right-click on a new folder > Import channel file.
Then you need to select a file format that matches your file. If you simply have a simple list (eg. Name,X,Y,Z), use one of the entries "EEG: ASCII: ...".
The registration with the MRI/CT in Brainstorm can be tricky...
- If your SEEG coordinates are registered with the MRI volume you used as the first anatomy file of your subject, use one of the "XYZ_World" entries.
- If they are in MNI coordinates, uste "XYZ_MNI".
- Otherwise, you need to include the three fiducials NAS/LPA/RPA in the coordinates file, in the same referencial as the SEEG electrodes, and defined exactly as in the Brainstorm MRI Viewer.
If you have difficulties with this, please describe what kind of data you have in input (contact position in a text file? please share the file) and what kind of display or behavior you'd like to have in Brainstorm.
Screen captures would help (ATL+PrintScreen, then CTRL+V directly in the forum editor).
Thanks