Hello everyone, <br><br>I just succeeded in loading a pretty large .cnt file (32-bit, from Scan 4.3, Synamps 2 amplifier) using eeglab9_0_7_6b on a 64-bit Windows 7 system. In the past I wasn't able to load even small .cnt files, but that was using a different system (32-bit Windows XP). I haven't had an opportunity to try it with other systems so I don't know if the key is having 64-bit MATLAB versus 32-bit, or having Windows 7 versus Windows XP. (I've also heard that running EEGLAB in Unix doesn't run into most of these memory problems.)<br>
<br>Best,<br>Steve Politzer-Ahles<br><br><div class="gmail_quote">On Thu, Sep 1, 2011 at 10:09 PM, John Curtin <span dir="ltr"><<a href="mailto:jjcurtin@wisc.edu">jjcurtin@wisc.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
For the record, we have had no problems importing Neuroscan cnt files with various hardware versions (synamps, synamps 2, synamps rt; 16 bit and 32 bit). We use 64 bit matlab to avoid memory issues in wndows. We use XP and Windows 7.<br clear="all">
John J. Curtin, Ph.D. <br>Professor of Psychology <br>Director of Clinical Training, and<br>Associate Chair of Graduate Studies<br>University of Wisconsin <br>1202 West Johnson St. <br>Madison, WI 53706 <br><br>Email: <a href="mailto:jjcurtin@wisc.edu" target="_blank">jjcurtin@wisc.edu</a> <br>
Website: <a href="http://dionysus.psych.wisc.edu" target="_blank">http://dionysus.psych.wisc.edu</a><br>Office: <a href="tel:608-262-0387" value="+16082620387" target="_blank">608-262-0387</a> <br>Lab: <a href="tel:608-262-5621" value="+16082625621" target="_blank">608-262-5621</a> <br>
Cell: <a href="tel:608-217-6221" value="+16082176221" target="_blank">608-217-6221</a> <br>Fax: <a href="tel:608-262-4029" value="+16082624029" target="_blank">608-262-4029</a><div><div></div><div class="h5"><br>
<br><br><div class="gmail_quote">On Thu, Sep 1, 2011 at 11:06 AM, Prof. Dr. Stefan Debener <span dir="ltr"><<a href="mailto:stefan.debener@uni-oldenburg.de" target="_blank">stefan.debener@uni-oldenburg.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Hi Leif,<br>
in my old lab we used a synamps2 system and never had problems importing the 68 channel cnt files, apart from some memory issues. This was between 2006 and 2008, so we probably used an older version of neuroscan ...<br>
Best,<br>
Stefan <br>
<br>
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<div style="direction:ltr"><font color="#000000" face="Tahoma" size="2"><b>From:</b> <a href="mailto:eeglablist-bounces@sccn.ucsd.edu" target="_blank">eeglablist-bounces@sccn.ucsd.edu</a> [<a href="mailto:eeglablist-bounces@sccn.ucsd.edu" target="_blank">eeglablist-bounces@sccn.ucsd.edu</a>] on behalf of Stephen Politzer-Ahles [<a href="mailto:politzerahless@gmail.com" target="_blank">politzerahless@gmail.com</a>]<br>
<b>Sent:</b> Wednesday, August 31, 2011 10:17 PM<br>
<b>To:</b> Leif Oines<br>
<b>Cc:</b> <a href="mailto:eeglablist@sccn.ucsd.edu" target="_blank">eeglablist@sccn.ucsd.edu</a><br>
<b>Subject:</b> Re: [Eeglablist] Issues importing 32 bit neuroscan CNT files recorded in scan 4.5<br>
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<div>Leif,<br>
<br>
I do not have an answer, but for what it's worth I have also never been able to import 32-bit .CNT files into EEGLAB (at least, not when running 32-bit Windows XP). On the other hand, I never had problems importing epoched .EEG files; therefore, my processing
pipeline involves first re-referencing and epoching the data in Neuroscan (if necessary, re-referencing could be done later in EEGLAB instead) and then importing the epoched data to EEGLAB for the rest of the preprocessing.<br>
<br>
I would also be very interested to hear about any solutions for importing the continuous data, though.<br>
<br>
Best,<br>
Steve Politzer-Ahles<br>
<br>
<div class="gmail_quote">On Tue, Aug 30, 2011 at 8:00 PM, Leif Oines <span dir="ltr">
<<a href="mailto:leifdoines@gmail.com" target="_blank">leifdoines@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">
Hello,<br>
<br>
I'm wondering if anyone else seems to have issues importing 32 bit neuroscan CNT files into eeglab (I've made sure that the 32 bit option is flagged when i go to read in the files). The data were recorded with a synamp2 64 channel amp. When I view the data
with the eeglab plotter data from several channels do not appear at any scale, and the latencies of the channels that do display seem off in comparison to what things look like in neuroscan 4.5. There was a similar post made around 2009 but no apparent resolution.
When I open epoched neuroscan EEG files, however, things seem fine. I suppose I could do all my preprocessing in neuroscan and then read in my EEG files, but I'm trying to move my entire pipeline into eeglab. Any help or even guesses would be wonderful.
<br>
<br>
Thanks,<br>
<font color="#888888">Leif Oines <br>
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-- <br>
Stephen Politzer-Ahles<br>
University of Kansas<br>
Linguistics Department<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Stephen Politzer-Ahles<br>University of Kansas<br>Linguistics Department<br><a href="http://www.linguistics.ku.edu/">http://www.linguistics.ku.edu/</a><br>