<div dir="ltr"><div><div><div>Hi Antonio, <br><br></div>It is possible to run cluster tests on the data you have already pre-processed, you just need to get the data into a fieldtrip structure. I usually find the easiest way to do this is to process two original files by hand in fieldtrip up to the point of creating a grand average structure using ft_timelockgrandaverage, to see what the appropriate structure looks like, and then sticking the actual data into that structure (in the .individual or .avg field) and updating the appropriate fields.<br><br></div>As Zdenko mentioned, there are also other tools available that can do this, including EEGLAB itself and the mass univariate toolbox.<br><br></div>Steve<br><div><div><div><div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><br></div><span><div>---<br></div>Stephen Politzer-Ahles<br>The Hong Kong Polytechnic University<br>Department of Chinese and Bilingual Studies<br><a href="http://www.mypolyuweb.hk/~sjpolit/" target="_blank">http://www.mypolyuweb.hk/~sjpolit/</a></span><a href="http://www.nyu.edu/projects/politzer-ahles/" target="_blank"></a></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Wed, Feb 15, 2017 at 8:34 AM, <span dir="ltr"><<a href="mailto:fieldtrip-request@science.ru.nl" target="_blank">fieldtrip-request@science.ru.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send fieldtrip mailing list submissions to<br>
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<br>
Message: 1<br>
Date: Tue, 14 Feb 2017 12:37:27 +0100<br>
From: Antonio Arjona Valladares <<a href="mailto:aarjona@us.es">aarjona@us.es</a>><br>
To: <a href="mailto:fieldtrip@science.ru.nl">fieldtrip@science.ru.nl</a><br>
Subject: [FieldTrip] Cluster-based permutation tests on event related<br>
potentials<br>
Message-ID: <<a href="mailto:47672490e00babb1106026384bbbe1a9@us.es">47672490e00babb1106026384bbbe<wbr>1a9@us.es</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hello everyone!<br>
<br>
This is my query:<br>
<br>
> We have two groups of EEG data (recorded in a 'Delayed Match to Sample task') pre-processed with Matlab and EEGlab. Each group is a matrix (.mat) which has 3 dimensions (channels x time x subjects). At this point, we are interested in apply the Cluster-based permutation test for nonparametric tests (Maris and Oostenveld, 2007) in order to find out the possible significant differences between these two groups on the different event related potentials.<br>
><br>
> The question is wether we have the possibility to apply this non parametric test, using field trip, EEGLAB or any other software, on this EEGLAB pre-processed matrix data (.mat); or, on the other hand, we have to start from the raw data (recorded with ASA (.cnt)) and go through all the necessary steps indicated on the methodology of the Cluster-based permutation test.<br>
><br>
> Thank you very much.<br>
><br>
> Best,<br>
<br>
--<br>
Antonio Arjona Valladares<br>
<br>
Research Technician (BS)<br>
Human Psychobiology Lab,<br>
Experimental Psychology Department, University of Seville,<br>
C/Camilo Jos? Cela s/n, 41018-Sevilla,<br>
Spain<br>
Tel: <a href="tel:%2B34%20954%2055%2078%2000" value="+34954557800">+34 954 55 78 00</a> - 954 55 69 41<br>
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