<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Vladimir,<div><br></div><div>Thanks for this hint. I will check this!</div><div><br></div><div>Best,</div><div><br></div><div>Stephan</div><div><br><div><div>El 19/06/2011, a las 21:08, Vladimir Litvak escribió:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Dear Stephan,<br><br>It might be that or that you transferred the files as ascii in FTP<br>rather than binary. I've seen this error before and showed the file to<br>Matti Hamalainen. He said the file was corrupted.<br><br>Best,<br><br>Vladimir<br><br>On Sun, Jun 19, 2011 at 4:20 PM, Stephan Moratti <<a href="mailto:smoratti@psi.ucm.es">smoratti@psi.ucm.es</a>> wrote:<br><blockquote type="cite">Hi Lauren,<br></blockquote><blockquote type="cite">Thanks for your reply. Yes I had it with 6 data sets where SSS was applied.<br></blockquote><blockquote type="cite">I had them copied from the HP workstation to our server and from there to my<br></blockquote><blockquote type="cite">Mac. Could it be a little and big endian thing provoked by moving the files<br></blockquote><blockquote type="cite">from different platforms?<br></blockquote><blockquote type="cite">Stephan<br></blockquote><blockquote type="cite">El 17/06/2011, a las 9:28, Laurence Hunt escribió:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Hi Stephan,<br></blockquote><blockquote type="cite">Did you do anything else to the data besides applying SSS? I use SSS on all<br></blockquote><blockquote type="cite">my data and haven't encountered this problem before. Does it apply to all<br></blockquote><blockquote type="cite">your datasets or just one specific file?<br></blockquote><blockquote type="cite">Laurence<br></blockquote><blockquote type="cite">===========================================<br></blockquote><blockquote type="cite">Laurence Hunt, DPhil Student<br></blockquote><blockquote type="cite"> Centre for Functional MRI of the Brain (FMRIB),<br></blockquote><blockquote type="cite">University of Oxford<br></blockquote><blockquote type="cite"><a href="mailto:lhunt@fmrib.ox.ac.uk">lhunt@fmrib.ox.ac.uk</a><br></blockquote><blockquote type="cite">Phone: (+44)1865-(2)22738<br></blockquote><blockquote type="cite">===========================================<br></blockquote><blockquote type="cite">On 17 Jun 2011, at 08:01, Stephan Moratti wrote:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Hello everybody,<br></blockquote><blockquote type="cite">I had no problems reading Neuromag data, but when I want to read data<br></blockquote><blockquote type="cite">treated with SSS I get the following error:<br></blockquote><blockquote type="cite">??? Error using ==> fiff_read_tag at 232<br></blockquote><blockquote type="cite">Cannot handle other than dense or sparse matrices yet<br></blockquote><blockquote type="cite">Error in ==> fiff_open at 80<br></blockquote><blockquote type="cite"> tag = fiff_read_tag(fid,dirpos);<br></blockquote><blockquote type="cite">Error in ==> fiff_read_meas_info at 82<br></blockquote><blockquote type="cite"> [ fid, tree ] = fiff_open(source);<br></blockquote><blockquote type="cite">Error in ==> ft_read_header at 1049<br></blockquote><blockquote type="cite"> orig = fiff_read_meas_info(filename);<br></blockquote><blockquote type="cite">Error in ==> mytrialfun_Neuromag_face at 3<br></blockquote><blockquote type="cite">hdr = ft_read_header(cfg.dataset);<br></blockquote><blockquote type="cite">Error in ==> ft_definetrial at 139<br></blockquote><blockquote type="cite"> trl = feval(cfg.trialfun, cfg);<br></blockquote><blockquote type="cite">Any idea, what I could do?<br></blockquote><blockquote type="cite">Best,<br></blockquote><blockquote type="cite">Stephan<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">El 17/06/2011, a las 0:37, Rodolphe Nenert escribió:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Im still afraid that the power of this analysis will be very low.<br></blockquote><blockquote type="cite">Maybe you can try an ICA on your fMRI data and try to correlate each<br></blockquote><blockquote type="cite">component with your EOG timecourse.<br></blockquote><blockquote type="cite">Rodolphe N.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">On Thu, Jun 16, 2011 at 1:16 PM, <a href="mailto:frank@greenant.net">frank@greenant.net</a> <<a href="mailto:fieldtrip@greenant.net">fieldtrip@greenant.net</a>><br></blockquote><blockquote type="cite">wrote:<br></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">It's a bit of a unique experiment, we're trying to use an ECG machine<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">to acquire EOG, so it's only a single output channel.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">i guess what I need is a temporal ICA rather than a spatial one...<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">On 17/06/2011, at 2:48 AM, Rodolphe Nenert wrote:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">To summarize, the ICA will decompose your signal into as many components<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">as Electrodes.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Therefore, trying to decompose only one source is useless.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Did you use a full net of electrodes into your MRI machine or only EOG<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">electrodes?<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Hope this helps,<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Rodolphe N.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">On Thu, Jun 16, 2011 at 11:42 AM, <a href="mailto:frank@greenant.net">frank@greenant.net</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><<a href="mailto:fieldtrip@greenant.net">fieldtrip@greenant.net</a>> wrote:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I am trying to use fieldtrip to filter EOG data obtained in an MRI.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I want to be able to spot the saccades in the samples and ideally measure<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">their onset at the<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">end of each trial.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">As you may guess, it's quite noisy and it's broad spectrum noise, despite<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">pre-filtering.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Ideally, I would like to isolate the component that corresponds to the<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">MRI interference<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">and then filter this out.<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I have managed to import the data and can run ft_componentanalysis<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">but it fails with:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">runica() - data size (1,30720) too small<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">My data is single channel, 40 epochs, each of 6 seconds (time locked to<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">stim onset but not saccade onset)<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">Is there a different method I should be using?<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">I have posted some sample data and the current script (which reads in the<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">data and runs preprocessing) to the following urls:<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><a href="http://greenant.net/temp/1_2_MRI_2011-04-29%2016:19:33.mat">http://greenant.net/temp/1_2_MRI_2011-04-29%2016:19:33.mat</a><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><a href="http://greenant.net/temp/EOG_analysis.m">http://greenant.net/temp/EOG_analysis.m</a><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">fieldtrip mailing list<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">fieldtrip mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">fieldtrip mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">fieldtrip mailing list<br></blockquote><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">________________________________________________________<br></blockquote><blockquote type="cite">Stephan Moratti, PhD<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">see also: <a href="http://web.me.com/smoratti/">http://web.me.com/smoratti/</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Universidad Complutense de Madrid<br></blockquote><blockquote type="cite">Facultad de Psicología<br></blockquote><blockquote type="cite">Departamento de Psicología Básica I<br></blockquote><blockquote type="cite">Campus de Somosaguas<br></blockquote><blockquote type="cite">28223 Pozuelo de Alarcón (Madrid)<br></blockquote><blockquote type="cite">Spain<br></blockquote><blockquote type="cite">and<br></blockquote><blockquote type="cite">Center for Biomedical Technology<br></blockquote><blockquote type="cite">Laboratory for Cognitive and Computational Neuroscience<br></blockquote><blockquote type="cite">Parque Científico y Tecnológico de la Universidad Politecnica de Madrid<br></blockquote><blockquote type="cite">Campus Montegancedo<br></blockquote><blockquote type="cite">28223 Pozuelo de Alarcón (Madrid)<br></blockquote><blockquote type="cite">Spain<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">email: <a href="mailto:smoratti@psi.ucm.es">smoratti@psi.ucm.es</a><br></blockquote><blockquote type="cite">Tel.: +34 679219982<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">fieldtrip mailing list<br></blockquote><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">fieldtrip mailing list<br></blockquote><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">________________________________________________________<br></blockquote><blockquote type="cite">Stephan Moratti, PhD<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">see also: <a href="http://web.me.com/smoratti/">http://web.me.com/smoratti/</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Universidad Complutense de Madrid<br></blockquote><blockquote type="cite">Facultad de Psicología<br></blockquote><blockquote type="cite">Departamento de Psicología Básica I<br></blockquote><blockquote type="cite">Campus de Somosaguas<br></blockquote><blockquote type="cite">28223 Pozuelo de Alarcón (Madrid)<br></blockquote><blockquote type="cite">Spain<br></blockquote><blockquote type="cite">and<br></blockquote><blockquote type="cite">Center for Biomedical Technology<br></blockquote><blockquote type="cite">Laboratory for Cognitive and Computational Neuroscience<br></blockquote><blockquote type="cite">Parque Científico y Tecnológico de la Universidad Politecnica de Madrid<br></blockquote><blockquote type="cite">Campus Montegancedo<br></blockquote><blockquote type="cite">28223 Pozuelo de Alarcón (Madrid)<br></blockquote><blockquote type="cite">Spain<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">email: <a href="mailto:smoratti@psi.ucm.es">smoratti@psi.ucm.es</a><br></blockquote><blockquote type="cite">Tel.: +34 679219982<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">fieldtrip mailing list<br></blockquote><blockquote type="cite"><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br></blockquote><blockquote type="cite"><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote><blockquote type="cite"><br></blockquote><br>_______________________________________________<br>fieldtrip mailing list<br><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br>http://mailman.science.ru.nl/mailman/listinfo/fieldtrip<br></div></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><br class="Apple-interchange-newline">________________________________________________________</div><div>Stephan Moratti, PhD<br><br></div><div>see also: <a href="http://web.me.com/smoratti/">http://web.me.com/smoratti/</a><br><br></div><div>Universidad Complutense de Madrid</div><div>Facultad de Psicología</div><div>Departamento de Psicología Básica I</div><div>Campus de Somosaguas</div><div>28223 Pozuelo de Alarcón (Madrid)</div><div>Spain</div><div><br></div><div>and</div><div><br></div><div>Center for Biomedical Technology</div><div>Laboratory for Cognitive and Computational Neuroscience</div><div>Parque Científico y Tecnológico de la Universidad Politecnica de Madrid<br>Campus Montegancedo</div><div>28223 Pozuelo de Alarcón (Madrid)</div><div>Spain<br><br><br>email: <a href="mailto:smoratti@psi.ucm.es">smoratti@psi.ucm.es</a><br>Tel.: +34 679219982<br><br></div></span></div></span></div></span></div></span></div></span></div></span> </div><br></div></body></html>