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<body lang="en-BE" link="#0563C1" vlink="#954F72"><p><span style="padding: 3px 10px; border-radius: 5px; color: #ffffff; font-weight: bold; display: inline-block; background-color: #ff0000;"> External Email - Use Caution </span></p><p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Dear MNE community,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">I have been using the function
<code><i><span style="font-family:"Times New Roman",serif"><a href="https://mne.tools/stable/generated/mne.stats.permutation_cluster_test.html">mne.stats.permutation_cluster_test</a>
</span></i></code><code><span style="font-family:"Times New Roman",serif">as a statistical test to
</span></code></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif">compare clusters in time-frequency power estimates between conditions.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Then, I plot the clusters that survived the cluster correction on top of the original data, in line with the docs.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">The results make sense, but I have the idea that the cluster is quite ‘spread’.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Specifically, the surviving cluster spans multiple frequency bands, and extends pretty far in time.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Is there a way to make the resulting cluster more restricted, both in the time- and frequency domain?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">I can, for example, now mask the resulting image and only keep the resulting, more significant ‘blobs’, but this is of course not as clean as an algorithm that outputs these
blobs without extra steps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Perhaps relevant: the parameters I used so far (with d1 being the data in condition 1)<o:p></o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman",serif">mne.stats.permutation_cluster_test([d1, d2],<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman",serif"> n_permutations = 1000,<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman",serif"> step_down_p = 0.05,<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman",serif"> threshold = None,
<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman",serif"> out_type = "indices",<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman",serif"> verbose = True)<o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Kind regards,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Pieter<o:p></o:p></span></p>
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