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Evoked responses (filtered between 1 and 40 Hz) in the magnetometer channels from (A) unprocessed data, (B) data processed with maxwell_filter in MNE, and (C) the difference between data processed using maxwell_filter and Elekta MaxFilter (TM). The colors show the sensor position, with (x, y, z) sensor coordinates converted to (R, G, B) values, respectively.
