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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Dear Jan-Mathijs,<br>
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Many thanks for your swift response. You were right, I am losing the sampleinfo generating
<font face="Courier New">tmpdata_small</font>. However, even when I use the original data, i.e.
<font face="Courier New">data_segm_offsetcorr</font> that includes the sampleinfo, the problem continues to occur. However, I now get the warning that
<font face="Courier New">samples are present in multiple trials<font face="Tahoma">. Checking the the number of unique rows in
</font></font><font face="Courier New"><font face="Tahoma"><font face="Courier New">data_segm_offsetcorr.sampleinfo
<font face="Tahoma">however finds the correct number of trials, it seems as if there were no doublings (which I would also not expect).
<br>
<br>
My trials are not in chronological order, though, but sorted according to </font>
</font></font></font><font face="Courier New"><font face="Tahoma"><font face="Courier New"><font face="Tahoma"><font face="Courier New"><font face="Courier New">data_segm_offsetcorr.</font>trialinfo</font>. May that confuse fieldtrip?<br>
<br>
Best,<br>
Christine<br>
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<div style="direction: ltr;" id="divRpF721715"><font face="Tahoma" color="#000000" size="2"><b>Von:</b> fieldtrip-bounces@science.ru.nl [fieldtrip-bounces@science.ru.nl]" im Auftrag von "Schoffelen, J.M. (Jan Mathijs) [jan.schoffelen@donders.ru.nl]<br>
<b>Gesendet:</b> Sonntag, 08. Mai 2016 09:46<br>
<b>An:</b> FieldTrip discussion list<br>
<b>Betreff:</b> Re: [FieldTrip] ft_databrowser & ft_rejectartifact - wrong number of trials rejected<br>
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<div>Hi Christine,
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<div class="">Are you sure that the tmpdata_small and data_segm_offsetcorr are consistent with respect to each other? As long as this is not the case, I am not surprised that fieldtrip ‘misbehaves’.</div>
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<div class="">Best,</div>
<div class="">Jan-Mathijs</div>
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<blockquote type="cite" class="">
<div class="">On 08 May 2016, at 09:26, Blume Christine <<a href="mailto:christine.blume@sbg.ac.at" class="" target="_blank">christine.blume@sbg.ac.at</a>> wrote:</div>
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<font class="" size="2">Good morning,<br class="">
<br class="">
I discovered that using ft_databrowser & ft_rejectartifact to preprocess my EEG data, often the wrong number of trials is rejected. This is the code I am using and it inherits data resulting from ft_redefinetrial.<br class="">
<br class="">
<font class="" face="Courier New"> cfg = [];<br class="">
cfg.latency = [-2 2];<span class="Apple-converted-space"> </span><font class="" color="808000">% period of interest</font><br class="">
tmpdata_small = ft_selectdata(cfg,data_segm_offsetcorr);<br class="">
<br class="">
cfg = [];<br class="">
cfg.layout = layout2;<br class="">
cfg.showlabel = 'yes';<br class="">
cfg.channel = 'EEG';<br class="">
cfg.gradscale = 0.04;<br class="">
cfg.continuous = 'no';<br class="">
<font class="" color="808000"> % filtering only for artifact rejection</font><br class="">
cfg.preproc.lpfilter = 'yes';<br class="">
cfg.preproc.lpfreq = 40;<br class="">
<br class="">
cfg_databrowser = ft_databrowser(cfg, tmpdata_small);<br class="">
data_segm_offsetcorr = ft_rejectartifact(cfg_databrowser, data_segm_offsetcorr);<br class="">
<br class="">
<font class="" face="Calibri" size="3">If I now, for example mark 10 trials in the databrowser and then run ft_rejectartifact, it tells me:<span class="Apple-converted-space"> </span><br class="">
<br class="">
<font class="" face="Courier New" size="2">detected 10 visual artifacts<br class="">
rejected 8 artifacts completely<br class="">
<br class="">
<font class="" size="3"><font class="" face="Calibri">Something seems to be wrong here as I clearly marked 10 artifacts (don't really care whether they are visual or not), but only 8 are removed. The problem gets worse when I call the function a second time,
which is when usually none of the marked artefacts are rejected at all.<br class="">
<br class="">
Any idea where the problem could be?<br class="">
<br class="">
Many thanks!<br class="">
Best,<br class="">
Christine</font></font></font></font><span class="Apple-converted-space"> </span></font><br class="">
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