<div dir="ltr">Hello Mick, <br><div><div class="gmail_extra"><br clear="all"><div><div><div dir="ltr"><div>You can go in and modify the 'trl' matrix created by ft_definetrial, so that it only includes the events you want. For example, imagine the first trial in your experiment has two simultaneous events, a '10' and a '2'; in the trl matrix, the first row will have the event value 10 and the second row will have the event value 2, but both rows will have the same latency. So you can write a loop that goes through your trl matrix and makes the appropriate adjustements to combine those rows---e.g., you could add the two values together to create a new event value of '12', or concatenate them to create '102', or whatever. After that, you can use the new trial matrix as input to cfg.trl when you call ft_preprocessing(). See <a href="http://www.fieldtriptoolbox.org/reference/ft_definetrial">http://www.fieldtriptoolbox.org/reference/ft_definetrial</a> for an explanation of the format of the trl matrix.<br><br></div><div>Best,<br></div><div>Steve<br></div><div><br></div><div><br></div>Stephen Politzer-Ahles<br>New York University, Abu Dhabi<br>Neuroscience of Language Lab<br><a href="http://www.nyu.edu/projects/politzer-ahles/" target="_blank">http://www.nyu.edu/projects/politzer-ahles/</a><br></div></div></div>
<div class="gmail_quote"><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
------------------------------<br>
<br>
Message: 3<br>
Date: Thu, 2 Jul 2015 18:02:55 +0200<br>
From: Mick Lehmann <<a href="mailto:mick.lehmann@uzh.ch" target="_blank">mick.lehmann@uzh.ch</a>><br>
To: <a href="mailto:fieldtrip@science.ru.nl" target="_blank">fieldtrip@science.ru.nl</a><br>
Subject: [FieldTrip] Several trigger names at same position<br>
Message-ID: <<a href="mailto:C7F7FC91-FF32-4EFA-A879-A567ADC6A70A@uzh.ch" target="_blank">C7F7FC91-FF32-4EFA-A879-A567ADC6A70A@uzh.ch</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi Fieldtrippers,<br>
<br>
I?m using the script for reading data and I have a special issue at cfg.trialdef.eventvalue (see script below). The thing is that I have several triggers at the exact same position and I want to analyze only a subgroup of events which is defined by a combination of two trigggernames / evenvalues. Does anybody know how to define those trials, meaning how to create an event as a combination of two triggernames?<br>
<br>
This is how the script looks like:<br>
VP = dir('*.dat');<br>
cfg = [];<br>
cfg.dataset = (VP.name);<br>
<br>
cfg.trialdef.eventtype = 'Comment';<br>
cfg.trialdef.prestim = 2;<br>
cfg.trialdef.poststim = 6;<br>
<br>
cfg.trialdef.eventvalue = {'HitHitReakt? 'Cue_N3_neg'}; The events should be read only if both conditions are fulfilled<br>
<br>
cfg = ft_definetrial(cfg);<br>
<br>
cfg.demean = 'yes';<br>
<br>
dataHitHitReact = ft_preprocessing(cfg);<br>
<br>
dataHitHitReact = renamechannels(dataHitHitReact);<br>
<br>
save dataHitHitReact_preproc dataHitHitReact<br>
<br>
fprintf('%s not found.\n',cfg.trialdef.eventvalue{1})<br>
<br>
<br>
<br>
I'm deeply grateful for any help.<br>
<br>
Thanks,<br>
Mick<br>
<br>
<br>
-------------- next part --------------<br>
An HTML attachment was scrubbed...<br>
URL: <<a href="http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20150702/3125ef99/attachment-0001.html" rel="noreferrer" target="_blank">http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20150702/3125ef99/attachment-0001.html</a>><br>
<br>
------------------------------<br></blockquote><div> </div></div><br></div></div></div>