<div dir="ltr">Dear all,<div>when attempting to detect blinks automatically on a continuous recording without EOGs, I use a few frontal sensors and ft_artifact_eog as follows:</div><div><font face="monospace"><br></font></div><div><div><font face="monospace">        cfg                         = [];</font></div><div><font face="monospace">        cfg.dataset                 = fullfile(rootdir,f{iD});</font></div><div><font face="monospace">        cfg.layout                  = 'neuromag306mag.lay';</font></div><div><font face="monospace">        cfg.trialdef.eventtype      = 'STI101';</font></div><div><font face="monospace">        cfg.trialdef.eventvalue      = {255};</font></div><div><font face="monospace">        cfg                          = ft_definetrial(cfg);</font></div><div><font face="monospace">       </font></div><div><font face="monospace">        cfg.trl                     = [cfg.trl(1,1) cfg.trl(end,2) 0];</font></div><div><span style="font-family:monospace">        cfg.channel                 = 'megmag'; </span><br></div><div><font face="monospace">        cfg.continuous              = 'yes';</font></div><div><span style="font-family:monospace">        data                        = ft_preprocessing(cfg);</span><br></div><div><span style="font-family:monospace"><br></span></div><span style="font-family:monospace"><br></span></div><div><div><font face="monospace">        cfg.artfctdef.eog           = [];</font></div><div><font face="monospace">        cfg.artfctdef.eog.channel   = eogchans;</font></div><div><font face="monospace">        cfg.artfctdef.eog.trlpadding = 0;</font></div><div><font face="monospace">        cfg.artfctdef.eog.interactive = 'yes';</font></div><div><font face="monospace">        </font></div><div><font face="monospace">        [cfg, artifact{iC,iD}]      = ft_artifact_eog(cfg,data);</font></div><div style="font-family:monospace"><br></div></div><div>This opens an interactive window in which the EOG signal is not BPfiltered, and contains in particular slow drifts that make the threshold detection pretty inefficient. I'm surprised because cfg.artfctdef is supposed to bpfilter 1-15Hz the data, isn't it?</div><div><br></div><div>Is this normal?</div><div>Thanks,</div><div>Max</div><div><br></div><div><font face="monospace"><br></font></div><div><br></div></div>