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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hi Christine,<br>
<br>
If I understand correctly:<br>
<br>
For each subject you have <b>four </b>conditions - A_face, A_house, B_face, B_house<br>
You compared A_face with A_house and there was a significant difference<br>
You compared B_face with B_house and there was also a significant difference<br>
<br>
Right?<br>
<br>
Now the reviewers want you to test if there is a difference between A and B<br>
<br>
You could:<br>
<br>
For every subject, create an average of A_face and A_house (let's call it A_avg)<br>
For every subject, create an average of B_face and B_house (let's call it B_avg)<br>
Compare A_avg and B_avg using depsamplesT<br>
<br>
Best,<br>
Tom<br>
<br>
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<div id="divRpF360813" style="direction: ltr;"><font size="2" color="#000000" face="Tahoma"><b>From:</b> fieldtrip-bounces@science.ru.nl [fieldtrip-bounces@science.ru.nl] on behalf of Blume Christine [christine.blume@sbg.ac.at]<br>
<b>Sent:</b> 14 August 2017 08:40<br>
<b>To:</b> FieldTrip discussion list (fieldtrip@science.ru.nl)<br>
<b>Subject:</b> [FieldTrip] Post hoc comparison following cluster-based permutation test<br>
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<p class="MsoNormal"><span lang="EN-GB">Dear all,</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">I am comparing event-related oscillatory responses in two conditions A and B. In each condition, subjects have been presented with two different stimulus types, let’s take “houses” and “faces” as an easy example. What
I have done so far is I compared the oscillatory responses to the two stimuli WITHIN each condition using cluster based permutation tests (depsamplesT; frequency range 4-15 Hz, 173 electrodes, 6 time bins). What I find is significant differences between “houses”
and “faces” within each condition. However it seems that in higher frequencies there is also a difference between conditions A and B. Now reviewers have asked me to test this difference statistically. Unfortunately, I do not really know how to go about…any
suggestions are highly appreciated!</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"><span lang="EN-GB">Best,</span></p>
<p class="MsoNormal"><span lang="EN-GB">Christine</span></p>
<p class="MsoNormal"><span lang="EN-GB"> </span></p>
<p class="MsoNormal"> </p>
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