<div dir="ltr">Dear Joaquin,<div><br></div><div>Further adding to Mikolaj's reply- today I published a new plugin pvaftopo(), which needed three lines only:</div><div><br></div><div><div>backProj = EEG.icawinv(:,IC)*eeg_getdatact(EEG,'component',IC,'reshape','2d');<br>
</div><div>outTopo = 100-100*var(EEG.data(:,:)-backProj,0,2)./var(EEG.data(:,:),0,2);</div></div><div>topoplot(outTopo, EEG.chanlocs);<br></div><div><br></div><div>With this plugin, you can demonstrate IC3 and IC9 together explain 78% of Fz activity, for example. Note that topoplot() is used in the last line. Here outTopo is a column vector that corresponds to the number of channels.</div>
<div><br></div><div>Check out the pvaftopo from plugin manager or url below.</div><div><a href="http://sccn.ucsd.edu/wiki/Plugin_list_process">http://sccn.ucsd.edu/wiki/Plugin_list_process</a></div><div><br></div><div>Sorejamata,</div>
<div>Makoto Miyakoshi</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-02-27 14:03 GMT-08:00 Mikołaj Magnuski <span dir="ltr"><<a href="mailto:imponderabilion@gmail.com" target="_blank">imponderabilion@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi,<br><br>just to add to Stephen's answer - you can plot anything with topoplot (p-values, correlation coefficients,<br>
mean spectral power etc.) - topoplot plots and interpolates given values, whatever these<br>
values are. The order of electrode-value pairings is determined by EEG.chanlocs<br>(this structure can be passed to topoplot).<br> </div><div class="gmail_extra"><br clear="all"><div>Pozdrawiam,<br>Mikołaj Magnuski</div>
<br><br><div class="gmail_quote">2014-02-27 19:54 GMT+01:00 Stephen Politzer-Ahles <span dir="ltr"><<a href="mailto:politzerahless@gmail.com" target="_blank">politzerahless@gmail.com</a>></span>:<div><div class="h5">
<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hi Joaquin,<div><br></div><div>topoplot() is plotting the activity at a certain time (or an average over a certain time window) at all channels, and interpolated between channels. I've never used it to plot activity restricted to a certain frequency, although in principle I guess that is possible; I've only used it to plot the raw ERP amplitudes, though.</div>
<div><br></div><div>Best,</div><div>Steve</div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><div><br></div><div><br></div>Stephen Politzer-Ahles<br>New York University, Abu Dhabi<br>Neuroscience of Language Lab<br>
<a href="http://www.nyu.edu/projects/politzer-ahles/" target="_blank">http://www.nyu.edu/projects/politzer-ahles/</a><br></div></div>
<br><br><div class="gmail_quote"><div><div>On Thu, Feb 27, 2014 at 2:51 PM, joaquin .cuomo <span dir="ltr"><<a href="mailto:jmcuomo@gmail.com" target="_blank">jmcuomo@gmail.com</a>></span> wrote:<br></div>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>
<div dir="ltr"><div><div><div><div><div>Hi, <br><br></div>I´m not fully sure if I´m understanding how topoplot() works.<br><br></div>First
I thought that it was plotting the interpolation of all channel
spectrums at a given frequency, but then I found spectopo(), which I
have not yet tested it, but seems to do what I supposed topoplot was
doing.<br>
<br></div>I can´t understand what is topoplot plotting, <u>because if neither a frequency nor time is fixed </u>it can not be plot.<br><br></div>Please someone clarify my thoughts.<br><br></div>Thanks!</div>
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-- <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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