<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><div dir="ltr"><div dir="ltr">Thank you for the reply dear Marijn!</div><div dir="ltr"><br></div><div>So, the compensation stage should be done after bad channels are removed/interpolated - got it!</div><div><br></div><div>Do you think the bad channels would affect the position extraction though?</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, May 5, 2019 at 2:39 PM Marijn van Vliet <<a href="mailto:w.m.vanvliet@gmail.com">w.m.vanvliet@gmail.com</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"> External Email - Use Caution <br>
<br>
Hi Evgenii,<br>
<br>
you’ll find that compensating head movement will spread the noise from bad channels to other channels. Best to be bad channel rejection *before* head movement compensation.<br>
<br>
best,<br>
Marijn.<br>
<br>
> On 5 May 2019, at 11:17, Evgenii Kalenkovich <<a href="mailto:e.kalenkovich@gmail.com" target="_blank">e.kalenkovich@gmail.com</a>> wrote:<br>
> <br>
> External Email - Use Caution <br>
> <br>
> <br>
> Dear all,<br>
> <br>
> I would like to use maxfilter for head movement compensation only and skip the filtering bits.<br>
> <br>
> There are two parts to this as I understand: head position extraction and the actual compensation. I have several overlapping questions about both parts.<br>
> • Head position extraction using Electa's MaxFilter<br>
> • Is this step sensitive to noisy/flat channels if I only need head position?<br>
> • Is it necessary/advised to use -cal and -ctc files for this purpose?<br>
> • Head movement compensation using mne-python's maxwell_filter<br>
> • Is this step sensitive to noisy/flat channels if I only do movement compensation?<br>
> • Is it necessary/advised to use the fine calibration and cross-talk cancellation files for this?<br>
> • What parameters should I supply to maxwell_filter to limit it to head movement compensation?<br>
> The reason I don't want the filtering done by MaxFilter/maxwell_filter is that I would like to avoid manually selecting bad channels. Which, in turn, I want to avoid to keep the analysis reproducible on new data. I remove bad channels/epochs at a later stage using the autoreject package.<br>
> <br>
> Thank you for any advice,<br>
> Evgenii<br>
> <br>
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