how to use spatial patterns to assess spatial spread
to counter EEG volume conduction, a spatial filter can be used, e.g. a Laplacian filter (1 electrode activity minus mean of surrounding ones). but if strong distant sources are present, they may still predominantly contribute to the filtered trace, yielding a non-local signal. pic.twitter.com/HldamITd6X
— Natalie Schaworonkow (@nschawor) August 6, 2020