<div dir="ltr">Dear Roni,<div><br></div><div>Yes I agree with Dezhong. If what he mentioned is the case, then you should see smaller amplitude near the reference and larger at the distant channels. You want to check if it is the case.</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, May 12, 2015 at 4:39 AM, Roni Shafir <span dir="ltr"><<a href="mailto:ronishafir1@gmail.com" target="_blank">ronishafir1@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="rtl"><div dir="ltr" style="font-size:12.8000001907349px">Hi all,</div><div dir="ltr" style="font-size:12.8000001907349px">We are using BioSemi in our experiments and recently moved from 64 electrodes to 32 electrodes.</div><div dir="ltr" style="font-size:12.8000001907349px">We are still using the 64 electrode caps.</div><div dir="ltr" style="font-size:12.8000001907349px">Something very strange that I noticed is that since we moved to 32 electrodes, Pz electrode has a very low (kind of flat) signal, as apposed to what I used to see when we used 64 electrodes.</div><div dir="ltr" style="font-size:12.8000001907349px">What could be the problem? I thought it may be related to the recording system or the online reference.</div><div dir="ltr" style="font-size:12.8000001907349px">Importantly, there is no problem with the electrode because I used different sets and this pattern remained unchanged.</div><div dir="ltr" style="font-size:12.8000001907349px">Did anyone have this problem already?</div><div dir="ltr" style="font-size:12.8000001907349px">Would appreciate your help.</div><span class="HOEnZb"><font color="#888888"><div dir="ltr" style="font-size:12.8000001907349px">Roni</div></font></span></div>
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