<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'><font size="3">Hi Katrin,</font><div style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt;"><br></div><div style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt;"><span style="font-size: 12pt;">First, to display the independent components:</span></div><div style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt;"><span style="font-size: 12pt;">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</span></div><div><div><div>cfg = [];</div><div>cfg.layout = 'CTF151.lay'; % specify the layout file that should be used for plotting</div><div>cfg.viewmode = 'component'</div><div>ft_databrowser(cfg, comp)</div></div><div><br></div><div>Take a look to the following example script:</div><div>http://fieldtrip.fcdonders.nl/example/use_independent_component_analysis_ica_to_remove_eog_artifacts</div><div><br></div><div>Second, you'll have to compute the power spectrum for each independent component with ft_freqanalaysis:</div><div><br></div><div>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div><div>cfg = [];</div><div>cfg.output = 'pow';</div><div>cfg.channel = 'all';%compute the power spectrum in all ICs</div><div>cfg.method = 'mtmfft';</div><div>cfg.taper = 'hanning';</div><div>cfg.foi = 2:2:30;</div><div>freq = ft_freqanalysis(cfg, comp);</div><div><br></div><div>And you can plot the spectra:</div><div><br></div><div>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</div><div>nsubplots = 25;</div><div>nbyn = sqrt(nsubplots);% sqrt(nsubplots) should not contain decimals, type doc subplot</div><div><br></div><div>Nfigs = ceil(size(comp.topo,1)/nsubplots);</div><div>tot = Nfigs*nsubplots;</div><div><br></div><div>rptvect = 1:size(comp.topo,1);</div><div>rptvect = padarray(rptvect, [0 tot-size(comp.topo,1)], 0,'post');</div><div>rptvect = reshape(rptvect,nsubplots,Nfigs)';</div><div><br></div><div>for r=1:size(rptvect,1);</div><div> figure;set(gcf,'units','normalized','outerposition',[0 0 1 1]);%full screen</div><div> k=0;</div><div> for j=1:size(rptvect,2);</div><div> if~(rptvect(r,j)==0);</div><div> k=k+1;</div><div> cfg=[];</div><div> cfg.channel = rptvect(r,j);</div><div> subplot(nbyn,nbyn,k);ft_singleplotER(cfg,freq);</div><div> end</div><div> end</div><div>end</div></div><div><br></div>For the IC topos you'll follow the same logic as above but with:</div><div><br></div><div><div>figure</div><div>cfg = [];</div><div>cfg.component = [1:20]; % specify the component(s) that should be plotted</div><div>cfg.layout = 'GSN-HydroCel-129.sfp'; </div><div>cfg.comment = 'no';</div><div>ft_topoplotIC(cfg, comp)</div><div><br></div><div>I hope it helps</div><div><br></div><div>Diego</div><hr id="zwchr" style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt;"><blockquote style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt; border-left-width: 2px; border-left-style: solid; border-left-color: rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><b>From: </b>"KatrinH Heimann" <katrinheimann@gmail.com><br><b>To: </b>"FieldTrip discussion list" <fieldtrip@science.ru.nl><br><b>Sent: </b>Wednesday, 28 May, 2014 12:59:38 PM<br><b>Subject: </b>[FieldTrip] ICA - Can I visualize Activity power spectrum of single components?<br><br><div dir="ltr">Dear all,<div>another question: </div><div style="">Is it possible to visualize the Activity power spectrum of the single components after an ICA by using ft_databrowser (or something else). I like this feature from EEG lab as I find it easier to detect artifactual components. </div>
<div style="">Thanks a lot for your help</div><div style="">Katrin</div><div style=""><br></div></div>
<br>_______________________________________________<br>fieldtrip mailing list<br>fieldtrip@donders.ru.nl<br>http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</blockquote><br><br><br><font size="3">-- </font><br><div style="color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-size: 12pt;"><span name="x"></span>PhD Student<br>Neuronal Oscillations Group<br>Donders Institute for Brain, Cognition and Behaviour <br>Centre for Cognitive Neuroimaging<br>Radboud University Nijmegen <br>NL-6525 EN Nijmegen<br>The Netherlands<br>http://www.ru.nl/people/donders/lozano-soldevilla-d/<span name="x"></span><br></div></div></div></body></html>