Please see the EGI manual in regards to File Exporting.<br>You can, if you want to, export your files from Netstation so that <br>they include the Cz reference channel which I believe EGI nets regularly use.<br>See the exporting 128 channels plus the reference.<br>
However, the ordinary path with EGI data is average referencing, because<br>of good electrode density and thus spatial sampling of the head.<br><br>if you import your data without a reference, <br>I suggest do not click "retain old reference"<br>
If you don't have the reference in the data,<br>then you assumedly do have the recording reference channel (whether it was on the scalp itself or not)<br>
<br><br><div class="gmail_quote">On Wed, May 4, 2011 at 9:09 AM, Fengji Geng <span dir="ltr"><<a href="mailto:kittymoonfly@gmail.com">kittymoonfly@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hi folks,<div>I have a question about average reference. I imported data from Net Station to EEGLAB. There are 128 channels. CZ is the reference channel, which is not included in these 128 channels. When I compute average reference, do I have to click <i>the retain old reference channels in data</i>? In the tutorial, it just indicated that do <i>click this box when the recording reference was on the scalp itself</i>. </div>
<div>Thanks!<br clear="all"><br>-- <br>Fengji <br><br>
</div>
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