[FieldTrip] Jump artifacts not detected

Es, M.W.J. van (Mats) M.vanEs at donders.ru.nl
Mon Jul 13 16:23:11 CEST 2015

Hi Jan-Matthijs,

To clarify: I used an older version of ft_artifact_zvalue because the mouseclicks were not working in the newest version in matlab2013a. Now I switched to matlab2015a where it does work. So when I use the latest version ft_artifact_zvalue and I create the large jump mentioned last time, I get the following (see images on http://dropcanvas.com/ydy5v): Note that for the first two images cfg.artfctdef.zvalue.channel is specified as 'MEG', for the third it is 'MRC11'.

1. jump_artfct_detection.png: The jump artifact in the first trial is not found. Even when the threshold is adjusted so that initially there is no artifact present at all (which there is in the shown figure).
2. muscle_artfct_detection.png: The jump artifact in the first trial is found
3. jump_artfct_detection2.png: Now the jump artifact is detected

Hope the problem is more clear now.

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