<div dir="ltr"><div><div><div><div>Hi Melissa,<br><br></div>What was your electrode layout during acquisition? If you already had a true bipolar montage (e.g., if you had had a pair of electrodes above and below an eye but they only come out to one channel of data in the acquisition) then those are already referenced to each other, so I believe there is no need to re-reference those to something else (in fact I'm not sure what it would mean); in my experience using such a setup, we specifically excluded the bipolar EOG montages from re-referencing. <br><br></div>This may also depend on what method you intend to use for blink detection and correction. <br><br></div>Best,<br></div>Steve<br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><br><br></div>Stephen Politzer-Ahles<br>New York University, Abu Dhabi<br>Neuroscience of Language Lab<br><a href="http://www.nyu.edu/projects/politzer-ahles/" target="_blank">http://www.nyu.edu/projects/politzer-ahles/</a><br></div></div></div>
<br><div class="gmail_quote">On Tue, Jul 28, 2015 at 6:47 AM, melissa scott <span dir="ltr"><<a href="mailto:melissascott6@gmail.com" target="_blank">melissascott6@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="ltr"><div><div>Dear Colleagues,<br><br></div>My advisor's lab recently started collecting ERP data. We decided to reference the electrodes to the left earlobe during data acquisition and plan to re-reference to the average of the left and right earlobes offline. We think we should also re-reference the electrodes
above and below the eyes before we create our bipolar channel (VEOG) that we will subsequently use for blink detection and correction. Does this seem appropriate? We appreciate your thoughts and suggestions.<br><br></div>thanks, Melissa<br></div>
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