<div dir="ltr">Dear Ibtissem,<div><br></div><div>>The goal is to replace a helmet of 64 electrodes with an other of 18 electrodes andthe rest will be virtual.<br></div><div class="gmail_extra"><br></div><div class="gmail_extra" style>
I'm suspicious of this approach, though I'm not quite sure about your goal either.</div><div class="gmail_extra" style><br></div><div class="gmail_extra" style><div>>The function edf-read gives me a matrix. It can be as input in eeg-interp??</div>
<div><br></div><div style>eeg_interp takes EEG as the first argument, so it should be the whole structure of the variable EEG. I could not find edf_read, but this anyway looks like data import function/plugin. Check if this generates only data matrix or EEG structure.</div>
<div style><br></div><div style>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">2013/4/1 Ibtissem Khouaja b.Fraj <span dir="ltr"><<a href="mailto:ibtissem.khouaja@live.fr" target="_blank">ibtissem.khouaja@live.fr</a>></span><br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div><div dir="ltr">Dear Arnaud and Macoto,<div>Thank you so much for your answers, it gives me some ideas.</div><div><br></div><div>I think eeg-enterp.m will be more useful. So, as input I have an edf file. It describe the EEG recording in 18 position on the scalp.</div>
<div>I want to propose a methode based on spatiotemporal from the recording to predict new location.</div><div>I think this method can be helpful to refine the diagnostic. The goal is to replace a helmet of 64 electrodes with an other of 18 electrodes andthe rest will be virtual.</div>
<div><br></div><div>The function edf-read gives me a matrix. It can be as input in eeg-interp??</div><div>thanks, Ibtissem <br><div><br><div><div></div><hr><div class="im">Subject: Re: [Eeglablist] signal prediction in Matlab<br>
</div>From: <a href="mailto:arno@ucsd.edu" target="_blank">arno@ucsd.edu</a><br>Date: Fri, 29 Mar 2013 07:50:10 -0700<br>CC: <a href="mailto:eeglablist@sccn.ucsd.edu" target="_blank">eeglablist@sccn.ucsd.edu</a><br>To: <a href="mailto:ibtissem.khouaja@live.fr" target="_blank">ibtissem.khouaja@live.fr</a><div>
<div class="h5"><br><br>Dear Ibti,<div><br></div><div>in addition to Makoto's suggestion, you can also interpolate the data to a "fake" data channel using the eeg_interp function. From the GUI, you could also add a channel and use the menu "Tools > Interpolate electrodes". This function will use spherical interpolation while topoplot does not use spherical interpolation.</div>
<div><br></div><div>Best,</div><div><br></div><div>Arno</div><div><br><div><div>On 26 Mar 2013, at 09:15, Ibtissem Khouaja b.Fraj wrote:</div><br><blockquote><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:Tahoma;font-size:14px"><div dir="ltr">
<div><div dir="ltr"><div style="font-family:Tahoma;font-size:10pt"><br>Hello, </div><div style="font-family:Tahoma;font-size:10pt">thank you for your reply.</div><div style="font-family:Tahoma;font-size:10pt"><br></div><div>
<font face="Tahoma" size="3"><span style="font-size:13px">My project is just to insert a new point that does not really exist on the scalp.</span></font></div><div><div style="font-family:Tahoma;font-size:13px">After the prediction of the amplitude variation of this point at any time, it will be covered by an electrode and we test the validity of the prediction algorithm.</div>
<div style="font-family:Tahoma;font-size:13px">For example, between points Cz, Pz and C4 that already knows the amplitude variation, we seek a point X which lies between these three points.</div><div style="font-family:Tahoma;font-size:13px">
<br></div><div><font face="Tahoma" size="3"><span style="font-size:13px">There exists an algorithm very useful in image processing and in increasing the number of pixels in an image, is called the bilinear interpolation algorithm. I don't know if it can be helpful in my project or not.</span></font></div>
</div><div><font face="Tahoma" size="3"><span style="font-size:13px">I work with Matlab and I need some algorithme to solve the problem.</span></font></div><div><font face="Tahoma" size="3"><span style="font-size:13px"><br>
</span></font></div><div><font face="Tahoma" size="3"><span style="font-size:13px">help me please, thank you!</span></font></div><div><font face="Tahoma" size="3"><span style="font-size:13px"><br></span></font></div><div>
<font face="Tahoma" size="3"><span style="font-size:13px">Ibti ssem</span></font></div><div><font face="Tahoma" size="3"><span style="font-size:13px"><br></span></font></div><br><br><div style="font-family:Tahoma;font-size:10pt">
<div></div>> Date: Tue, 12 Mar 2013 14:27:52 -0400<br>> Subject: Re: [Eeglablist] signal prediction in Matlab<br>> From:<span> </span><a href="mailto:vivek.yadav@gmail.com" target="_blank">vivek.yadav@gmail.com</a><br>
> To:<span> </span><a href="mailto:ibtissem.khouaja@live.fr" target="_blank">ibtissem.khouaja@live.fr</a><br>><span> </span><br>> hello,<br>> try spherical interpolation in EEG.<br>> thanks<br>><span> </span><br>
><span> </span><br>> On Tue, Mar 12, 2013 at 4:33 AM, Ibtissem Khouaja b.Fraj<br>> <<a href="mailto:ibtissem.khouaja@live.fr" target="_blank">ibtissem.khouaja@live.fr</a>> wrote:<br>> ></div><div style="font-family:Tahoma;font-size:10pt">
--------------------------------------------------------------------------------</div><div style="font-family:Tahoma;font-size:10pt"><br></div><div style="font-family:Tahoma;font-size:10pt"><br></div><div style="font-family:Tahoma;font-size:10pt">
Hi all,<br>> &g! t; knowing the location of recording signals on the scalp, I want to pred new<br>> > locations not covered by electrodes to refine the result.<br>> > I need an algorithme in Matlab to do the linear prediction from the matrice<br>
> > describing 18 sites.<br>> ><br>> > hope you understand my question.<br>> > Thank a lot.<br>> ><br>> > _______________________________________________<br>> > Eeglablist page:<span> </span><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<span> </span><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<br>
> ><span> </span><a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a><br>><span> </span><br>><span> </span><br>><span> </span><br>> --<span> </span><br>
> Vivek Yadav, PhD<br>
> Post-Doctoral Scholar,<br>> Movement Neuroscience Lab,<br>> 29 Rec Hall,<br>> Pennsylvania State University,<br>> University Park, PA-16801<br>><span> </span><br>> "Nothing in life is to b! e feared, it is only to be understood." ~ Marie Curie<br>
</div></div></div></div>_______________________________________________<br>Eeglablist page:<span> </span><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<span> </span><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<span> </span><a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a></span></span></blockquote>
</div><br></div></div></div></div></div></div> </div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div>
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