<div dir="ltr">Dear Kornelia,<div><br></div><div>If biosemi, you must re-reference to something, which reduces the rank by 1 so you should fit the rank either by discarding one any channel (recommended) or use pca option to reduce the rank. See the following to find what would happen if you don't do it.</div><div><a href="http://sccn.ucsd.edu/wiki/Makoto%27s_preprocessing_pipeline">http://sccn.ucsd.edu/wiki/Makoto%27s_preprocessing_pipeline</a><br></div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Dec 30, 2014 at 7:57 AM, Kornelia Gentsch <span dir="ltr"><<a href="mailto:Kornelia.Gentsch@unige.ch" target="_blank">Kornelia.Gentsch@unige.ch</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal">Dear all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Sorry for asking the same question again but I am confused because of opposing replies. One reply was that it is okay to keep Cz for ICA when Cz is the reference channel for importing Biosemi EEG data into EEGlab (the reference channel
is flat after the data were imported). The other reply was that when Cz is the reference channel for data import it must be removed prior to ICA.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Could you please let me know which reply is the correct one?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thank you very much in advance!<span class="HOEnZb"><font color="#888888"><u></u><u></u></font></span></p><span class="HOEnZb"><font color="#888888">
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Kornelia<span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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