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Hi Javier,
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<div class="">Thanks for the update, and sorry to continue nagging about this, but it is - despite your (and certainly also my) best efforts - still not clear what your problem is. I felt lucky, so I downloaded the data, and performed the following (inspired
by the code that you sent along):</div>
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The call to ft_topoplotER yielded three figures, which clearly show different topographies. Note that what is visualized is the (average of the) time course, not the covariance. So the interim conclusion is that the data is different in the 3 different ‘conditions’,
at least in their average (which is according to the code that you provided)</div>
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Next, I decided to compute the covariance per condition, and check whether they are equal. This does not seem to be the case, because I get:</div>
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<div>Visualization of the covariance matrices confirms this</div>
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<div>In summary, I don’t think that there is something wrong with ft_timelockanalysis, at least not in the sense that the 'covariance distributions’ are the same. What makes you (still) think that they are the same?</div>
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<div>Also - as a side note - I don’t understand why you first create a data structure in fieldtrip style, save it as a mat-file, and then call ft_preprocessing on it. What do you think that this step achieves?</div>
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<div>Best wishes,</div>
<div>Jan-Mathijs</div>
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<div class="">On 18 Nov 2022, at 11:44, Francisco Javier Quirant Agulló via fieldtrip <<a href="mailto:fieldtrip@science.ru.nl" class="">fieldtrip@science.ru.nl</a>> wrote:</div>
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<span class="">Hi<span class="Apple-converted-space"> </span></span><span class="">Jan-<span class="SpellE">Mathijs</span></span><span class="">,</span><span class=""></span></div>
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<span class="">First thank you again for your patience and the suggested links. I apologize as trying to be concise I’ve fallen way short. Lets try this again with more organized information. Also apologies for any typos as English is my second language.</span></div>
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<span class="">Goal: As stated in my initial mail the objective is to characterize source estimation methods through metrics. Some of this metrics are derived from a Resolution matrix that is obtained with the inverse kernel and the<span class="Apple-converted-space"> </span><span class="SpellE">leadfield</span><span class="Apple-converted-space"> </span>matrix
(R = KL). Resolution matrices for all source points get averaged in a so called empirical Resolution matrix from where the metrics get extracted.<span class=""> </span></span></div>
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<span class="">Steps: To obtain this matrix all source model points have to “activate”. This is achieved by dividing the brain volume in patches (following<span class="Apple-converted-space"> </span><span class="SpellE">Desikan-Killiani’s</span><span class="Apple-converted-space"> </span>atlas)
that activate in different trials or sessions. With Brainstorm a step signal of 1000 samples and fs= 500Hz gets generated and forced upon those patches, so for every source point within them this is the source signal. There are 68 patches that activate in
different trials or sessions, from each of these a EEG (64 electrode cap) gets simulated using a BEM model calculated with Brainstorm default/tutorial files. Some amount of noise is added, random noise in the source signals distribution and a combination of<span class="Apple-converted-space"> </span><span class="SpellE">pink+white</span><span class="Apple-converted-space"> </span>noise
as sensor noise when obtaining the EEG signals. At the end of the day there are 68 different source activation maps with their associated EEG level signals. With this EEG signals different estimations (<span class="SpellE">dSPM</span>,<span class="Apple-converted-space"> </span><span class="SpellE">eLORETA</span>,
sLORETA…) will be performed and Resolution matrices obtained for each of them.</span></div>
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<span class="">From here the EEG files get exported to<span class="Apple-converted-space"> </span><span class="SpellE">matlab</span><span class="Apple-converted-space"> </span>to calculate<span class="Apple-converted-space"> </span><span class="SpellE">eLORETA</span><span class="Apple-converted-space"> </span>using<span class="Apple-converted-space"> </span><span class="SpellE">FieldTrip</span>.
eLORETA needs as input the data covariance calculated through<span class="Apple-converted-space"> </span><span class="SpellE">ft_timelockanalysis</span><span class="Apple-converted-space"> </span>to get the results in the time domain, this is at least what
I understand after reading the function information and the tutorials. When calling the function using the code from the first mail and independently of the EEG signals used I get the same covariance distribution and hence, the exact same source map after
applying eLORETA. The step signal is the same, true, but the activation region within the brain is different and so they are the EEG level signals.</span></div>
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<span class="">Why EEG signals derived from different brain activation regions get the same covariance distribution when calling<span class="Apple-converted-space"> </span><span class="SpellE">ft_timelockanalysis</span>?<span class="Apple-converted-space"> </span></span></div>
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Files and aditional information: </div>
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<span class=""><span class=""><span class=""><span class=""><span class=""><span class=""><span class=""><a href="https://urldefense.com/v3/__https://upvedues-my.sharepoint.com/:u:/g/personal/fjquiagu_upv_edu_es/EdO01tlTC69Bi6p42iMb63EB9xV8o9BWTZhZ8uWE50KHNg?e=TWKEsU__;!!HJOPV4FYYWzcc1jazlU!9BfdnfX8eW7Tqf2Fa3O6aptGt8B_Auuj6EUkkl5xZdJJRsgsnBYCK7PD8As-zMvgdOk4WJkw1pfWqDzzztCp2BupPB99kYUsxhiHaw$" rel="noopener noreferrer" contenteditable="false" id="OLK_Beautified_OWA30187c22-b836-417d-eb1a-3b633f9508d9" class="OWAAutoLink eScj0 WSYlv" data-ogsc="" data-loopstyle="link" style="padding: 0px 1px; border-top-left-radius: 2px; border-top-right-radius: 2px; border-bottom-right-radius: 2px; border-bottom-left-radius: 2px; background-color: rgb(244, 244, 244);"><img alt="" role="presentation" src="https://res-geo.cdn.office.net/assets/mail/file-icon/png/generic_16x16.png" style="width: 16px; height: 16px; vertical-align: middle; padding: 1px 2px 2px 0px;" class="">files.mat</a></span></span></span></span></span></span></span> contains
the matlab variables where</div>
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- data: is merely a template struc for the code.</div>
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- eeg_01/02/03: these are 3 different EEG level signals for the activation of 3 different brain regions. </div>
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- vol: headmodel employed for all inverse problem related calculations. </div>
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- elec: sensor information for EEG channels.</div>
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- sourcemodel_and_leadfield: kind of self explanatory, merely a crappy demo for quick calculations.</div>
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In <span class=""><a href="https://urldefense.com/v3/__https://upvedues-my.sharepoint.com/:u:/g/personal/fjquiagu_upv_edu_es/EdYcnPUx2r5Bl-EAfx-0pBsB0vW0X2Vg-FHzKwD5g8OuBQ?e=oPU19A__;!!HJOPV4FYYWzcc1jazlU!9BfdnfX8eW7Tqf2Fa3O6aptGt8B_Auuj6EUkkl5xZdJJRsgsnBYCK7PD8As-zMvgdOk4WJkw1pfWqDzzztCp2BupPB99kYXjSqDPUQ$" rel="noopener noreferrer" contenteditable="false" id="OLK_Beautified_OWAc4ec6862-a084-02bf-33df-408e5302b85e" class="OWAAutoLink eScj0 WSYlv" data-ogsc="" data-loopstyle="undefined" style="padding: 0px 1px; border-top-left-radius: 2px; border-top-right-radius: 2px; border-bottom-right-radius: 2px; border-bottom-left-radius: 2px; background-color: rgb(243, 242, 241);"><img alt="" role="presentation" src="https://res-geo.cdn.office.net/assets/mail/file-icon/png/generic_16x16.png" style="width: 16px; height: 16px; vertical-align: middle; padding: 1px 2px 2px 0px;" class="">code_example.m</a></span> there
is a demo of what i am doing in matlab using the previous variables. </div>
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<span class="">I hope everything is more clear now. Thank you again for your time and patience. </span></div>
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<span class="">Greetings, </span></div>
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<span class="">Javier</span></div>
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<a name="_MailOriginal" class=""><b class=""><span class="">De:</span></b></a><span class=""><span class=""><span class="Apple-converted-space"> </span>fieldtrip <<a href="mailto:fieldtrip-bounces@science.ru.nl" class="">fieldtrip-bounces@science.ru.nl</a>><span class="Apple-converted-space"> </span><span class="SpellE"><b class="">En</b></span><b class=""><span class="Apple-converted-space"> </span><span class="SpellE">nombre</span><span class="Apple-converted-space"> </span>de<span class="Apple-converted-space"> </span></b><span class="SpellE">Schoffelen</span>,
J.M. (Jan<span class="Apple-converted-space"> </span><span class="SpellE">Mathijs</span>) via fieldtrip<br class="">
<span class="SpellE"><b class="">Enviado</b></span><b class=""><span class="Apple-converted-space"> </span><span class="SpellE">el</span>:</b><span class="Apple-converted-space"> </span><span class="SpellE">viernes</span>, 18 de<span class="Apple-converted-space"> </span><span class="SpellE">noviembre</span><span class="Apple-converted-space"> </span>de
2022 7:50<br class="">
<b class="">Para:</b><span class="Apple-converted-space"> </span><span class="SpellE">FieldTrip</span><span class="Apple-converted-space"> </span>discussion list <<a href="mailto:fieldtrip@science.ru.nl" class="">fieldtrip@science.ru.nl</a>><br class="">
<b class="">CC:</b><span class="Apple-converted-space"> </span><span class="SpellE">Schoffelen</span>, J.M. (Jan<span class="Apple-converted-space"> </span><span class="SpellE">Mathijs</span>) <<a href="mailto:janmathijs.schoffelen@donders.ru.nl" class="">janmathijs.schoffelen@donders.ru.nl</a>><br class="">
<span class="SpellE"><b class="">Asunto</b></span><b class="">:</b><span class="Apple-converted-space"> </span>Re: [<span class="SpellE">FieldTrip</span>] Help needed for<span class="Apple-converted-space"> </span><span class="SpellE">timelock</span><span class="Apple-converted-space"> </span>analysis</span></span></div>
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<span class=""><span class="">Hi Javier, <span class="Apple-converted-space"> </span></span></span></div>
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<span class=""><span class="">Sorry to repeat my self, but you are still not clear.</span></span></div>
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<span class=""><span class="">You ask ‘why is it giving me always the same result despite being completely different EEG signals’.</span></span></div>
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<span class=""><span class="">I don’t understand what ‘it’ is, and I see nowhere in your messages what you mean with ‘completely different EEG signals’. It’s all still Spanish to me.</span></span></div>
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<span class=""><span class="">Different channels? Different simulations? Different step functions? Different noise? How did you do the simulations? How do the simulated signals look? What forward model was used in the simulation? Did you simulate enough variability
in the sources’ time courses in order to have a chance to observe spatiotemporal variability at the scalp level? What did you expect from the call to ft_timelockanalysis?</span></span></div>
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<span class=""><span class="">Also, please refer to </span></span><a href="https://urldefense.com/v3/__http://www.catb.org/*esr/faqs/smart-questions.html__;fg!!HJOPV4FYYWzcc1jazlU!9BfdnfX8eW7Tqf2Fa3O6aptGt8B_Auuj6EUkkl5xZdJJRsgsnBYCK7PD8As-zMvgdOk4WJkw1pfWqDzzztCp2BupPB99kYXL7d1FAw$" data-auth="NotApplicable" class=""><span class=""><span class="">http://www.catb.org/~esr/faqs/smart-questions.html</span></span><span class=""></span></a><span class=""><span class=""> and </span></span><a href="https://urldefense.com/v3/__https://www.fieldtriptoolbox.org/faq/how_to_ask_good_questions_to_the_community/__;!!HJOPV4FYYWzcc1jazlU!9BfdnfX8eW7Tqf2Fa3O6aptGt8B_Auuj6EUkkl5xZdJJRsgsnBYCK7PD8As-zMvgdOk4WJkw1pfWqDzzztCp2BupPB99kYUHTvfexA$" data-auth="NotApplicable" class=""><span class=""><span class="">https://www.fieldtriptoolbox.org/faq/how_to_ask_good_questions_to_the_community/</span></span><span class=""></span></a><span class=""><span class=""></span></span></div>
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<span class=""><span class="">Good luck,</span></span></div>
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<span class=""><span class="">Jan-Mathijs</span></span></div>
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<span class=""><span class="">On 17 Nov 2022, at 18:04, Francisco Javier Quirant Agulló via fieldtrip <</span></span><a href="mailto:fieldtrip@science.ru.nl" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span class="">fieldtrip@science.ru.nl</span></span><span class=""></span></a><span class=""><span class="">>
wrote:</span></span></div>
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<span class=""><span class="">Hi Jan,<span class="apple-converted-space"> </span></span></span></div>
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<span class=""><span class="">Sorry for not being clear enough. The question is, how should I apply the timelock function properly? Or, why is it giving me always the same result despite being completely different EEG signals?</span></span></div>
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<span class=""><span class="">Thanks and greetings,</span></span></div>
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<span class=""><span class="">Javier<span class="apple-converted-space"> </span></span></span></div>
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<span class=""><b class=""><span class="">De:</span></b></span><span class=""><span class="apple-converted-space"><span class=""> </span></span></span><span class=""><span class="">fieldtrip <</span></span><a href="mailto:fieldtrip-bounces@science.ru.nl" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span class="">fieldtrip-bounces@science.ru.nl</span></span><span class=""></span></a><span class=""><span class="">><span class="apple-converted-space"> </span><span class="SpellE"><b class="">En</b></span><b class=""><span class="Apple-converted-space"> </span><span class="SpellE">nombre</span><span class="Apple-converted-space"> </span>de<span class="apple-converted-space"> </span></b><span class="SpellE">Schoffelen</span>,
J.M. (Jan<span class="SpellE">Mathijs</span>) via fieldtrip<br class="">
<span class="SpellE"><b class="">Enviado</b></span><b class=""><span class="Apple-converted-space"> </span><span class="SpellE">el</span>:</b><span class="apple-converted-space"> </span><span class="SpellE">jueves</span>, 17 de<span class="Apple-converted-space"> </span><span class="SpellE">noviembre</span><span class="Apple-converted-space"> </span>de
2022 17:19<br class="">
<b class="">Para:</b><span class="apple-converted-space"> </span><span class="SpellE">FieldTrip</span><span class="Apple-converted-space"> </span>discussion list <</span></span><a href="mailto:fieldtrip@science.ru.nl" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span class="">fieldtrip@science.ru.nl</span></span><span class=""></span></a><span class=""><span class="">><br class="">
<b class="">CC:</b><span class="apple-converted-space"> </span><span class="SpellE">Schoffelen</span>, J.M. (Jan<span class="Apple-converted-space"> </span><span class="SpellE">Mathijs</span>) <</span></span><a href="mailto:janmathijs.schoffelen@donders.ru.nl" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span class="">janmathijs.schoffelen@donders.ru.nl</span></span><span class=""></span></a><span class=""><span class="">><br class="">
<span class="SpellE"><b class="">Asunto</b></span><b class="">:</b><span class="apple-converted-space"> </span>Re: [<span class="SpellE">FieldTrip</span>] Help needed for<span class="Apple-converted-space"> </span><span class="SpellE">timelock</span><span class="Apple-converted-space"> </span>analysis</span></span></div>
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<span class=""><span class="">Hi Javier,<span class="apple-converted-space"> </span></span></span></div>
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<span class=""><span class="">What is your question? I don’t manage to distill it from your e-mail.</span></span></div>
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<span class=""><span class="">Best wishes,</span></span></div>
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<span class=""><span class="">Jan-Mathijs</span></span></div>
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<span class=""><span class="">On 17 Nov 2022, at 15:42, Francisco Javier Quirant Agulló via fieldtrip <</span></span><a href="mailto:fieldtrip@science.ru.nl" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span class="">fieldtrip@science.ru.nl</span></span><span class=""></span></a><span class=""><span class="">>
wrote:</span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">Hello everyone, </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="eop"><span style="" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">My name is Javier, I am a student of Biomedical</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">engineering</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> and I
am working currently on my final master's project. The project aims to compare various inverse algorithms with some metrics and characterize them. </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">Right</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">now</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> what
I am doing is generating a step signal at source level in 68 different brain sections and obtaining simulated EEG</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">signals with
fs = 500 Hz & 2s length (1000 samples) and some noise added.</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">The
initial steps are performed using</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">BrainStorm</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> and
EEGs are exported to</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">matlab</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> to
apply</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">eLORETA</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> and
sLORETA with Fieldtrip.</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">For this I am trying to calculate the time domain information for the signals with</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_timelockanalysis</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> and
use the results in</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_sourceanalysis</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">.
I realized that the source results were</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">identical
for the different EEGs (each one for a particular brain section), while the</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">EEGs
seem right the output of the</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_timelockanalysis</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> is</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">the
same for all signals. Checking the function</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">information</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> I
saw a note in line 45 that says:</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">“%
FIXME if input is one raw trial, the covariance is not computed correctly”. Tried dividing the EEG in 4 trials but no difference whatsoever. Spent some time also checking results within the function but haven’t made any progress.</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">I think I may be using the data with an incorrect format or</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">a
wrong</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">,
any help would be much</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">apreciated</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">.
Follows the code.</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">-----------------------------------</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">data.trial</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">{1} = real(eeg_01.F);% No idea why but EEGs
from</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">BrainStorm</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> convert
to complex in</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">matlab</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">data.time</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">{1} =</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">eeg_01.Time</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">;</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">save('</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">temp.mat','data</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">');</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> =
[</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">]; </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> % This section only when
I divide in trials (obviously)</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg.trialdef.triallength</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = 0.</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">5; </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg.trialdef.eventtype</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = 'none';</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">=</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_definetrial</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">(</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">);</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">data =</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_preprocessing</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">(</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">);</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">delete '</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">temp.mat</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">'</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></p>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = [</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">]; </span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg.covariance</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = 'yes';</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg.keeptrials</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = 'yes';</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> %
I comment these two lines for single trial</span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg.trials</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = 'all'</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">data_cov</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> =</span></span></span><span class=""><span class="apple-converted-space"><span lang="EN-GB" style="font-size: 12pt;" class=""> </span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_timelockanalysis</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">(</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">,
data);</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></p>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg.layout</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class=""> = 'EEG1010.lay';</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">ft_topoplotER</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">(</span></span></span><span class=""><span class="normaltextrun"><span lang="EN-GB" style="font-size: 12pt;" class="">cfg,data_cov</span></span></span><span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">);
% This to plot the result, I get the same for all EEG files.</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></p>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">-----------------------------------</span></span></span><span class=""><span class="eop"><span style="font-size: 12pt;" class=""> </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="bcx0"><span lang="EN-GB" style="font-size: 12pt;" class="">Here you have the mat file with all variables and 3 of the EEGs already loaded: </span></span></span><a href="https://urldefense.com/v3/__https:/upvedues-my.sharepoint.com/:u:/g/personal/fjquiagu_upv_edu_es/EUPygCCic5NEiZak0leUSHsBSJAOKw9aJ_-ae7oibQIhNQ?e=TPWOkC__;!!HJOPV4FYYWzcc1jazlU!7ZVGIVpHujMhbuqj07PjD4_tJOJIGEhEa9EXa1hIOo6IqWXpztkw-y9kXyF9UpcjBTlphhjSrdqGapjwDYPr0saXmetMS6Y5taMH_w$" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""></span><span class=""><span lang="EN-GB" style="font-size: 12pt; background-color: rgb(244, 244, 244); text-decoration: none;" class=""><img border="0" width="16" height="16" id="_x0000_i1025" src="https://res-geo.cdn.office.net/assets/mail/file-icon/png/generic_16x16.png" class=""></span></span><span class=""></span><span class=""><span lang="EN-GB" style="font-size: 12pt; background-color: rgb(244, 244, 244);" class="">files.mat</span></span><span class=""></span></a><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="eop"><span style="font-size: 12pt;" class="">I hope everything is clear enought. </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="eop"><span style="font-size: 12pt;" class="">Greetings, </span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span class="eop"><span style="font-size: 12pt;" class="">Javier</span></span></span><span class=""></span><span class=""><span class=""></span></span></div>
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<span class=""><span style="font-size: 10.5pt; font-family: Helvetica, sans-serif;" class="">_______________________________________________<br class="">
fieldtrip mailing list<br class="">
</span></span><a href="https://mailman.science.ru.nl/mailman/listinfo/fieldtrip" data-auth="NotApplicable" class=""><span class=""><span style="font-size: 10.5pt; font-family: Helvetica, sans-serif;" class="">https://mailman.science.ru.nl/mailman/listinfo/fieldtrip</span></span><span class=""></span></a><span class=""><span style="font-size: 10.5pt; font-family: Helvetica, sans-serif;" class=""><br class="">
</span></span><a href="https://urldefense.com/v3/__https:/doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!7ZVGIVpHujMhbuqj07PjD4_tJOJIGEhEa9EXa1hIOo6IqWXpztkw-y9kXyF9UpcjBTlphhjSrdqGapjwDYPr0saXmetMS6ZuT5is3Q$" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span style="font-size: 10.5pt; font-family: Helvetica, sans-serif;" class="">https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!7ZVGIVpHujMhbuqj07PjD4_tJOJIGEhEa9EXa1hIOo6IqWXpztkw-y9kXyF9UpcjBTlphhjSrdqGapjwDYPr0saXmetMS6ZuT5is3Q$</span></span><span class=""></span></a><span class=""><span class=""></span></span></div>
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</blockquote>
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<span class=""><span class=""> </span></span></p>
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<div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
<span class=""><span style="font-size: 10.5pt; font-family: Helvetica, sans-serif;" class="">_______________________________________________<br class="">
fieldtrip mailing list<br class="">
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</span></span><a href="https://urldefense.com/v3/__https:/doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!9mv2ZfhmgyQM2cnKYVMi4KmXT2iM-rhDIoKMzszsxvPMLkizmdbFnBJZbfr8a7_O7W5Ao7KPkHOOjvFSJDVKT_VMd2W0uunQbr0MTA$" data-auth="NotApplicable" data-loopstyle="link" class=""><span class=""><span style="font-size: 10.5pt; font-family: Helvetica, sans-serif;" class="">https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!9mv2ZfhmgyQM2cnKYVMi4KmXT2iM-rhDIoKMzszsxvPMLkizmdbFnBJZbfr8a7_O7W5Ao7KPkHOOjvFSJDVKT_VMd2W0uunQbr0MTA$</span></span><span class=""></span></a><span class=""><span class=""></span></span></div>
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</blockquote>
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<p class="MsoNormal" style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">
<span class=""> </span></p>
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<span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">fieldtrip
mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<a href="https://mailman.science.ru.nl/mailman/listinfo/fieldtrip" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<a href="https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!9BfdnfX8eW7Tqf2Fa3O6aptGt8B_Auuj6EUkkl5xZdJJRsgsnBYCK7PD8As-zMvgdOk4WJkw1pfWqDzzztCp2BupPB99kYUS7Ufp-g$" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!9BfdnfX8eW7Tqf2Fa3O6aptGt8B_Auuj6EUkkl5xZdJJRsgsnBYCK7PD8As-zMvgdOk4WJkw1pfWqDzzztCp2BupPB99kYUS7Ufp-g$</a><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""></span></div>
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