Reference Channel in Offline Analysis Tool

This forum deals with BCI2000 configuration issues.
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sumits
Posts: 18
Joined: 15 Nov 2011, 06:25

Reference Channel in Offline Analysis Tool

Post by sumits » 11 Jul 2013, 06:52

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
Posts: 1088
Joined: 12 Feb 2003, 11:06

Re: Reference Channel in Offline Analysis Tool

Post by mellinger » 12 Jul 2013, 15:47

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

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