Reference Channel in Offline Analysis Tool

[sumits]

While recording EEG using BrainProducts ActiChamp amplifier, we use a reference EEG channel.

When we record files using BCI2000 StimulusPresentation and subsequently perform offline analysis using the OfflineAnalysis batch file as per the mu rhythm tutorial, is there any option to perform referencing w.r.t a particular channel rather than doing CAR?

[mellinger]

No, that's not available as an option currently. However, it is not difficult to identify the place in the Matlab code where the CAR is computed (it should show up when searching for "CAR" in the Matlab editor), and to replace that code with your own matrix multiplication.

Regards,
Juergen