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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In Neuroscan you are collecting from all electrodes. So once you have collected just do a re-reference to a good channel. However, you have to remember that
doing this may significantly change the visualization of the response. For instance if you were to re-reference to Cz your signals would invert.
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Herbert Jay Gould, Ph.D.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">Associate Professor<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">School Communication Sciences and Disorders</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#1F497D">The University of Memphis</span><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> eeglablist-bounces@sccn.ucsd.edu [mailto:eeglablist-bounces@sccn.ucsd.edu]
<b>On Behalf Of </b>James Kean<br>
<b>Sent:</b> Wednesday, January 23, 2013 9:46 PM<br>
<b>To:</b> eeglablist@sccn.ucsd.edu<br>
<b>Subject:</b> [Eeglablist] Mastoid Signal<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">G'day guys<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This may not be the right forum to ask so you can just tell me where to go if it's not but I wanted to ask about mastoids.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am testing children aged 6 to 14 years, with behavioural difficulties, as you can imagine they are quite difficult to get a clean EEG signal from.<o:p></o:p></p>
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<p class="MsoNormal">On occasion a mastoid will dislodge slightly or the child will itch it giving it a bad signal...<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">My question is this:<o:p></o:p></p>
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<p class="MsoNormal">Is there a way to tell whatever program you're using like <i>
EEGlab </i>or <i>Neuroscan </i>to use the signal from the clean mastoid rather than the bad mastoid?<o:p></o:p></p>
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<p class="MsoNormal">OR to use majority of the signal from the good one and less from the bad one?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Just wanted to know because these kids tend to wriggle a lot causing these kinds of problems.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If anyone knows that'd be a great help.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheers<o:p></o:p></p>
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<p class="MsoNormal">James<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">James Kean<br>
PhD Candidate<br>
Swinburne Centre for Human Psychopharmacology<o:p></o:p></p>
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<p class="MsoNormal">Hawthorn, Australia<o:p></o:p></p>
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<p class="MsoNormal"><a href="mailto:JKEAN@groupwise.swin.edu.au" target="_blank">JKEAN@swin.edu.au</a><o:p></o:p></p>
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<p class="MsoNormal"><i>Ph: 9214 5242</i><o:p></o:p></p>
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<p class="MsoNormal"><i>Mobile: 0425 735 847</i><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="color:#000099">For information on Brain Health, Developmental Disorders and Natural Medicine</span><span style="color:#006600">s</span><o:p></o:p></p>
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<p class="MsoNormal"><a href="http://www.naturalhealthera.com/channel.php?cid=49" target="_blank"><span style="color:#003300">http://www.naturalhealthera.com/channel.php?cid=49</span></a>
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