<div dir="ltr">The functions I created reflect the revised notice, which as you noted affects the NA 300. They ask the user for their NetStation version number and determine the correct adjustment based on what is entered. <div><br></div><div>Thank you, </div></div><div class="gmail_extra"><br><div class="gmail_quote">2015-10-13 15:00 GMT-04:00 <span dir="ltr"><<a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send eeglablist mailing list submissions to<br>
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<br>Today's Topics:<br>
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1. Re: Correct for EGI latency error functions (Makoto Miyakoshi)<br>
<br><br>---------- Mensaje reenviado ----------<br>From: Makoto Miyakoshi <<a href="mailto:mmiyakoshi@ucsd.edu">mmiyakoshi@ucsd.edu</a>><br>To: Kay Sung <<a href="mailto:ksung3@jhmi.edu">ksung3@jhmi.edu</a>><br>Cc: "<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>" <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Date: Tue, 13 Oct 2015 09:43:19 -0700<br>Subject: Re: [Eeglablist] Correct for EGI latency error functions<br><div dir="ltr">Dear Kay,<div><br></div><div>Thank you for sharing information. This is very important!</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 12, 2015 at 6:09 AM, Kay Sung <span dir="ltr"><<a href="mailto:ksung3@jhmi.edu" target="_blank">ksung3@jhmi.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple">
<div>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">Regarding the latency issue, there were actually two announcements about the latency issue from EGI (they are attached below).<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">The original notice says that there was a significant timing delay in most of Net Amp models but later they changed it.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">I don’t know Isaiah’s codes reflect the most recent announcement from EGI.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">In their second announcement, EGI said that they found latency delay only in NetAmp 300 model with some specific versions of Netstation.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">See below.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">*** Original announcement ****<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Arial",sans-serif;color:#000066">Electrical Geodesics, Inc. Advisory Notice:<span><br>
Anti-Alias Filter Effects on EEG Timing</span></span></b><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">This advisory notice is to alert users of EGI’s GES 300 and 400 series amplifiers to the delay of EEG data inherent in the anti-aliasing filters of these amplifiers. These delay values have not been
effectively communicated to EGI customers and need to be considered when aligning events (such as events generated from E-Prime or from digital inputs) to the EEG.<br>
<br>
The digital Finite Impulse Response filters used prior to A/D conversion delay the EEG by a fixed interval. This interval is known for each sampling rate and amplifier model:</span><br>
<u></u><u></u></p>
<table border="1" cellspacing="0" cellpadding="0" width="477" style="width:357.75pt;border:outset black 1.0pt">
<tbody>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Sampling Rate</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 300</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 400</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 405</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 410</span></b><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">1000 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">8 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">36 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">36 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">13 ms</span><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">500 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">18 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">66 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">66 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">34 ms</span><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">250 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">36 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">112 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">112 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">76 ms</span><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">125 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">72 ms</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Without adjustment, the EEG is delayed with respect to real time and to event markers that are aligned with real time. This delay does not affect timing of events manually entered by the user with
respect to the EEG during acquisition.<br>
<br>
Particularly for the Net Amps 400, 405, and 410 models at lower sampling rates, the delays may be significant in considering EEG and ERP timing. To adjust for this delay, users must add a positive value in the “Offset Segment” field in the segmentation tool,
in addition to E-Prime Event or digital input event (DIN) offsets.<br>
<br>
This adjustment is only required for real time events that are recorded during acquisition. Events entered during review or from the operations of tools after data acquisition are already aligned correctly with the EEG.<br>
<br>
To make the delays clear to each user, both the EGI technical manuals and EGI Support training will be modified to underscore the importance of including these delays in the event alignment and segmentation process. In addition, the Net Station software (version
5.1.1) will provide an option for automatic adjustment.<br>
<br>
<a href="http://cts.vresp.com/c/?ElectricalGeodesicsI/25e92832cf/6774d3b846/1bb8b10916/utm_content=gfrishkoff%40gsu.edu&utm_source=VerticalResponse&utm_medium=Email&utm_term=&utm_campaign=Advisory%20Notice%20-%20Anti-Alias%20Filter%20Effects%20on%20EEG%20Timing" target="_blank"></a>Please
<a href="mailto:supportteam@egi.com" target="_blank">contact EGI support</a> for any questions.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d">*** Second announcement ****<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Arial",sans-serif;color:#000066">Electrical Geodesics, Inc.<br>
Update to Anti-Alias Filter Effects on EEG Timing Advisory Notice</span></b><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">This is an update to an advisory notice issued to users of EGI’s GES 300 and 400 series amplifiers on the delay of EEG data inherent in the anti-alias filters of these amplifiers.<br>
<br>
In the original advisory notice, it was noted that the digital Finite Impulse Response filters used after analog-to-digital conversion delay the EEG by a fixed interval by the following values:</span><br>
<u></u><u></u></p>
<table border="1" cellspacing="0" cellpadding="0" width="477" style="width:357.75pt;border:outset black 1.0pt">
<tbody>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Sampling Rate</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 300</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 400</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 405</span></b><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">NA 410</span></b><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">1000 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 8 ms (0.52)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 36 ms (0.63)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 36 ms (0.52)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 13 ms (0.52)</span><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">500 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 18 ms (0.63)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 66 ms (1.03)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 66 ms (1.03)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 34 ms (1.10)</span><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">250 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 36 ms (2.07)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 112 ms (0)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 112 ms (0)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 76 ms (2.07)</span><u></u><u></u></p>
</td>
</tr>
<tr style="height:15.0pt">
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">125 s/s</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> 72 ms (2.53)</span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
</td>
<td width="130" nowrap style="width:97.5pt;border:inset black 1.0pt;padding:0in 0in 0in 0in;height:15.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><u></u><u></u></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Without adjustment, the EEG is delayed with respect to real time and to event markers that are aligned with real time. This delay does not affect timing of events manually entered by the user with
respect to the EEG during acquisition.<br>
<br>
The delay values in the original Advisory Notice were verified with the most recent versions of Net Station 4.5 and 5.0, representing the software versions that are most widely used by our customer base. The original Advisory Notice was issued immediately after
this verification effort.<br>
<br>
Since releasing the original Advisory Notice on 28 August 2014, we have continued our verification testing to confirm these delay values in all other versions of Net Station associated with the NA 300 amplifier, in order to provide our customers not using Net
Station 4.5 or 5.0 with more specific guidance.<br>
<br>
With the NA 300 amplifier, we found that the filter delay is only present in Net Station version 4.4 and later; events are correctly aligned with the EEG data when acquired with earlier versions of Net Station (4.3.1 and earlier). Furthermore, we found that
for data recorded with Net Station versions 4.4 through 4.5.7, the correction values for the default 250 s/s sampling rate (which is likely used by the majority of customers) is 8 ms.<br>
<br>
For data acquired with the NA 400, NA 405 and NA 410 amplifiers, there is no modification to the delay values presented in the original Advisory Notice.<br>
<br>
Starting with Net Station 4.4, all data files contain an amplifier serial number. This information can be used to determine whether adjustments are required for a given data file acquired with an NA 300 amplifier. Contact EGI support for information on how
to locate the amplifier serial number (if present) in the data file.<br>
<br>
EGI will release a tool to adjust the latency delay in affected files in the coming weeks. In addition, the Net Station software (version 5.1.2) will provide an option for automatic alignment during acquisition.<br>
<br>
<a href="http://cts.vresp.com/c/?ElectricalGeodesicsI/becac2c8a8/2eeb100ff4/ec13d0112a/utm_content=ascherme%40uvm.edu&utm_source=VerticalResponse&utm_medium=Email&utm_term=&utm_campaign=Update%20to%20Advisory%20Notice%20-%20Anti-Alias%20Filter%20Effects%20on%20EEG%20Timing" target="_blank"></a>Please
<a href="mailto:supportteam@egi.com" target="_blank">contact EGI support</a> for any questions.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> <a href="mailto:eeglablist-bounces@sccn.ucsd.edu" target="_blank">eeglablist-bounces@sccn.ucsd.edu</a> [mailto:<a href="mailto:eeglablist-bounces@sccn.ucsd.edu" target="_blank">eeglablist-bounces@sccn.ucsd.edu</a>]
<b>On Behalf Of </b>Makoto Miyakoshi<br>
<b>Sent:</b> Saturday, October 10, 2015 5:53 PM<span><br>
<b>To:</b> Isaiah Innis <<a href="mailto:isainnis@indiana.edu" target="_blank">isainnis@indiana.edu</a>><br>
<b>Cc:</b> EEGLAB List <<a href="mailto:eeglablist@sccn.ucsd.edu" target="_blank">eeglablist@sccn.ucsd.edu</a>><br>
</span><span><b>Subject:</b> Re: [Eeglablist] Correct for EGI latency error functions<u></u><u></u></span></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Dear Isaiah,<u></u><u></u></p><div><div>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thank you for sharing this info. I heard of it from Elise, one of visitors here. EGI users, please pay attention!<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Makoto<u></u><u></u></p>
</div>
</div></div></div><div><div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Fri, Oct 9, 2015 at 9:48 AM, Isaiah Innis <<a href="mailto:isainnis@umail.iu.edu" target="_blank">isainnis@umail.iu.edu</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<p class="MsoNormal">Hello eeglab list:<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Those of us who use EGI hydro-cel systems received<span style="font-size:10.0pt"> "Advisory Notice: Anti-Alias Filter Effects on EEG Timing" warning that there is a fixed latency delay present for any event codes sent to the EEG during
recording. The EEG is delayed with respect to the events, and needs to be corrected by either shifting the EEG forward or the events back. </span>While it is possible to correct this within NetStation, since our lab analyzes data exclusively using eeglab I
wrote a series of functions to correct the delay within eeglab. It is my hope that others may find this beneficial. However, I am a matlab novice and would like to see if anyone on the list has any comments or suggestions. <u></u><u></u></p>
</div>
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<p class="MsoNormal"><u></u> <u></u></p>
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<div>
<p class="MsoNormal">You can download a .zip archive with the functions here: <<a href="https://www.dropbox.com/sh/2udz5qrdb79b2b8/AAAS6Bws_O65gJnpnATS1azza?dl=0" target="_blank">https://www.dropbox.com/sh/2udz5qrdb79b2b8/AAAS6Bws_O65gJnpnATS1azza?dl=0</a>>.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">If you have any questions or criticisms upon reviewing the functions, please contact me at:
<a href="mailto:isainnis@indiana.edu" target="_blank">isainnis@indiana.edu</a><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">If there is interest, I will make this a plugin for ease of use. <br clear="all">
<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thank you, <u></u><u></u></p>
</div>
<p class="MsoNormal"><span><span style="color:#888888">-- <u></u><u></u></span></span></p>
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<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:#888888">Isaiah Innis<br>
Indiana University '13<br>
EEG Technician, IUB IRF</span><u></u><u></u></p>
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</div>
<p class="MsoNormal"><br>
_______________________________________________<br>
Eeglablist page: <a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html" target="_blank">
http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>
To unsubscribe, send an empty email to <a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu" target="_blank">
eeglablist-unsubscribe@sccn.ucsd.edu</a><br>
For digest mode, send an email with the subject "set digest mime" to <a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">
eeglablist-request@sccn.ucsd.edu</a><u></u><u></u></p>
</blockquote>
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<p class="MsoNormal"><br>
<br clear="all">
<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
</div>
<p class="MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<p class="MsoNormal">Makoto Miyakoshi<br>
Swartz Center for Computational Neuroscience<br>
Institute for Neural Computation, University of California San Diego<u></u><u></u></p>
</div>
</div>
</div>
</div></div></div>
</div>
<br>_______________________________________________<br>
Eeglablist page: <a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html" rel="noreferrer" target="_blank">http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>
To unsubscribe, send an empty email to <a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu" target="_blank">eeglablist-unsubscribe@sccn.ucsd.edu</a><br>
For digest mode, send an email with the subject "set digest mime" to <a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a><br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div></div>
</div>
<br>_______________________________________________<br>
eeglablist mailing list <a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a><br>
Eeglablist page: <a href="http://www.sccn.ucsd.edu/eeglab/eeglabmail.html" rel="noreferrer" target="_blank">http://www.sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>
To unsubscribe, send an empty email to <a href="mailto:eeglablist-unsub@sccn.ucsd.edu">eeglablist-unsub@sccn.ucsd.edu</a><br>
To switch to non-digest mode, send an empty email to <a href="mailto:eeglablist-nodigest@sccn.ucsd.edu">eeglablist-nodigest@sccn.ucsd.edu</a><br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Isaiah Innis<br>Indiana University '13<br>EEG Technician, IUB IRF<br><br></div></div>
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