### Include Laplacian in Offline Analysis

Posted:

**08 Feb 2022, 06:08**Dear forum,

I am working on a SMR-training protocol using EEG and BCI2000, similar to the one described here https://www.bci2000.org/mediawiki/index ... I_Tutorial. After the screening session, I use the Offline Analysis tool to determine the target frequency. Unlike the real-time analysis, the Offline Analysis tool does not include a spatial filter. I would like to change this. For the spatial filter in the real-time analysis, I implemented a Large Laplacian filter, and I think it would be more accurate to include the Large Laplacian filter in the Offline Analysis as well. My question is: how can I do this? How can I add the Large Laplacian into the Offline Analysis tool? Can this be done in one of the Matlab scripts of the Offline Analysis directory, and if yes, where exactly?

I appreciate any help!

Natasha

I am working on a SMR-training protocol using EEG and BCI2000, similar to the one described here https://www.bci2000.org/mediawiki/index ... I_Tutorial. After the screening session, I use the Offline Analysis tool to determine the target frequency. Unlike the real-time analysis, the Offline Analysis tool does not include a spatial filter. I would like to change this. For the spatial filter in the real-time analysis, I implemented a Large Laplacian filter, and I think it would be more accurate to include the Large Laplacian filter in the Offline Analysis as well. My question is: how can I do this? How can I add the Large Laplacian into the Offline Analysis tool? Can this be done in one of the Matlab scripts of the Offline Analysis directory, and if yes, where exactly?

I appreciate any help!

Natasha