<div dir="ltr"><div class="gmail_default" style="font-size:large">Hi Eniko.</div><div class="gmail_default" style="font-size:large"><br></div><div class="gmail_default" style="font-size:large">You might check this out:</div><div class="gmail_default" style="font-size:large"><br></div><div class="gmail_default" style="font-size:large"><a href="https://www.fieldtriptoolbox.org/example/source_statistics/">https://www.fieldtriptoolbox.org/example/source_statistics/</a><br></div><div class="gmail_default" style="font-size:large"><br></div><div class="gmail_default" style="font-size:large">I would add that in my experience a strong significance at sensor does not imply a significance at source. </div><div class="gmail_default" style="font-size:large"><br></div><div class="gmail_default" style="font-size:large">Best wishes,</div><div class="gmail_default" style="font-size:large"><br></div><div class="gmail_default" style="font-size:large">Paolo</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 4, 2021 at 8:13 PM Ladanyi, Eniko <<a href="mailto:eniko.ladanyi@vumc.org">eniko.ladanyi@vumc.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">




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Hi all,<u></u> <u></u></p>
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<u></u> <u></u></p>
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I am analyzing an MEG dataset in which I only have access to source-level data. I ran cluster-based permutation tests on the data with pre-defined ROI-s but I was wondering if it would make sense not to pre-define ROI-s but search for spatial clusters with
 a cluster-based permutation test. I’m not familiar enough with MEG, so I can’t decide if the features of source-level data would allow me to run the cluster analysis the same way described here for sensor-level data<span style="background-color:rgb(255,255,255);display:inline">: </span><a href="https://www.fieldtriptoolbox.org/tutorial/cluster_permutation_freq/" target="_blank">https://www.fieldtriptoolbox.org/tutorial/cluster_permutation_freq/</a>.<u></u> <u></u></p>
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<u></u> <u></u></p>
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Would cluster-based permutation test work as well with source-level data as with sensor-level data? If so, what kind of layout file should I use? Positions of sensors/electrodes can be defined with two coordinates but sources can be only defined with three
 coordinates.<u></u> <u></u></p>
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<u></u> <u></u></p>
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Thanks so much in advance for any advice!<u></u> <u></u></p>
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<u></u> <u></u></p>
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Best,<u></u> <u></u></p>
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<u></u> <u></u></p>
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Eniko<u></u> <u></u></p>
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<p style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(117,123,128)">*********************</span></p>
<p style="margin-top:0px;margin-bottom:0px"><span style="font-size:12pt">Eniko Ladanyi, Ph.D.<span style="color:rgb(114,50,173)"></span></span></p>
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<span style="font-size:8pt">Postdoctoral Fellow</span></p>
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<span style="font-size:8pt">Vanderbilt University Medical Center</span></p>
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<span style="font-size:8pt">Music Cognition Lab</span></p>
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<span style="font-size:8pt"><a href="https://enikoladanyi.com/" target="_blank">https://enikoladanyi.com/</a><br>
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