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<div><font color="black" face="arial" size="2"><font color="black" face="arial" size="2"><font color="black" face="arial" size="2"> Dear Fieldtrip<font size="2">-Users, <br>
<br>
<font size="2">I am t<font size="2">rying to do lcmv beamform sourcean<font size="2">alysis w<font size="2">it<font size="2">h a common filter for all conditions<font size="2"> <font size="2">(<font size="2">same session<font size="2">, <font size="2">different trials <font size="2">defined with ft_pr<font size="2">eprocessing belon<font size="2">g to different conditions,sequence of conditions </font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font>randomly inter<font size="2">mixed for each block). <br>
<font size="2"><font size="2">However i<font size="2">f I <font size="2">use the common filter calculated from<font size="2"> one</font> block (consist<font size="2"><font face="arial">ing</font> <font size="2">of 57 trials)</font></font> <font size="2">ft_sourceplot doesn't show any activity anymore<font size="2"> (if <font size="2">I run each condition se<font size="2">p<font size="2">arate<font size="2">ly</font> with<font size="2">out common filters i<font size="2">t is working). <br>
<br>
<font size="2">Her<font size="2">e is how I proc<font size="2">eed: <br>
<br>
<font size="2"><font face="arial">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</font></font><br>
<br>
<font size="2">% MAKE <font size="2">TIMELOCKANALYSIS <font size="2">F<font size="2">OR</font></font> <font size="2">COMPLETE</font> BLOCK<br>
<br>
cfg = [];<br>
<font size="2">cfg.channel='MEG';<br>
<font size="2">cfg.keeptrials='yes';<br>
<font size="2">cfg.blc<font size="2">='yes';<br>
<font size="2">cfg.blcwindow = [-<font size="2">0.2 0]<br>
<font size="2">data = ft_timelockanalysis(cfg,data);</font><br>
<br>
<font size="2">cfg<font size="2"> = [];<br>
<font size="2">c<font size="2">fg.channel = 'MEG'<br>
<font size="2">cfg.covariance ='yes';<br>
<font size="2">cfg.covar<font size="2">iancew<font size="2">indow = [0 0.2];<br>
<font size="2">cfg.removeme<font size="2">an = 'no';<br>
<font size="2">cfg.keeptrials = 'yes';<br>
<font size="2">timelock_post = ft_timelockanalysis(cfg,data);<br>
<font size="2">cfg.covariancewindow = [-0.2 0];<br>
<font size="2">timelock<font size="2">_pre = ft_timelockanal<font size="2">ysis(cfg,data);<br>
<br>
<font size="2">%M<font size="2">AKE SOURCEANALYSIS <font size="2">FOR</font> COMPLETE BLOCK AND KEEP F<font size="2">ILTER<br>
<br>
<font size="2">cfg = [];<br>
<font size="2">cfg.method = 'lcmv';<br>
<font size="2">cfg.grid = grid.grid;<br>
<font size="2">cfg.vol = vol.vol;<br>
<font size="2">cfg.grad = grad.grad;<br>
<font size="2"><font size="2">cfg.keeptrials='yes';<br>
<font size="2">cfg.lcmv.lamda = '5%<font size="2">';<br>
<font size="2"><font size="2">cfg.lcmv.keepfilter <font size="2">= 'yes';</font></font></font><br>
<font size="2"><font size="2">source_post = ft_sourceanalysis<font size="2">(cfg,timelock_post);<br>
<font size="2">source_pre = ft_sourceanalysis<font size="2">(cfg,timelock_pre);<br>
<br>
<font size="2"><font size="2">source_post.avg.nai = source_post.avg.pow<font size="2">./source_pre.avg.pow;<br>
<br>
<font size="2">%<font size="2">MAKE TIMELOCKANALYSIS O<font size="2">F S<font size="2">PE<font size="2">CIFIC</font></font> CONDITIONS<br>
<br>
<font size="2">cfg = [];<br>
<font size="2">cfg.trials=<font size="2">cond1</font>; %this <font size="2">picks out the <font size="2">trials belonging to condition<font size="2">1<br>
<font size="2">cfg.channel ='MEG<font size="2">';<br>
<font size="2">cfg.keeptrials='yes'<font size="2">;<br>
<font size="2">cfg.blc = 'yes';</font><br>
<font size="2">cfg.blcwindow = [-02 0];<br>
<font size="2">data=<font size="2">ft_timelockanalysis(cfg,data);<br>
</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font><font color="black" face="arial" size="2"><font color="black" face="arial" size="2"><font color="black" face="arial" size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font color="black" face="arial" size="2"><font color="black" face="arial" size="2"><font color="black" face="arial" size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"><font size="2"></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font><br>
<font size="2">cfg =[];<br>
<font size="2"><font size="2">cfg.channel='MEG';<br>
<font size="2">cfg.covariance='yes';<br>
<font size="2">cfg.<font size="2">covariancewindow=[0<font size="2"> 0.2];<br>
<font size="2">cfg.removem<font size="2">ean ='no';<br>
<font size="2">cfg.keeptrials='yes';<br>
<font size="2"><font size="2">timelock_post_<font size="2">cond1</font> = ft_timelockanalysis(cfg,data);<br>
<font size="2">timelock_pre_<font size="2">cond1 = ft_timelockanalysis(cfg,data);<br>
<br>
</font></font></font></font></font></font></font></font></font></font></font></font></font></font><font size="2">%MAKE<font size="2"> SOUCEANALYSIS <font size="2">OF SPECIFIC CONDITION USING THE COM<font size="2">MON FILTER OF THE BLOCK<br>
<br>
<font size="2">cfg = [];<br>
<font size="2">cfg.method = 'lcmv';<br>
<font size="2">cfg.gr<font size="2">id = grid.grid;<br>
<font size="2">cfg.grid.filter=s<font size="2">ource_post.avg.</font>filter;<br>
<font size="2">cfg.lcmv.keepfilter='no';<br>
<font size="2">cfg.keeptrials = 'yes';<br>
<font size="2">cfg.vol = vol.vol;<br>
<font size="2">cfg.grad=grad.grad;<br>
<font size="2">cfg.lcmv.lam<font size="2">bda='5%';<br>
<br>
<font size="2">source_post_co<font size="2">nd1<font size="2"> = ft_sourceanalysis (cfg,timelock_post_<font size="2">cond1</font>);<br>
<font size="2">source_pre_cond1 = ft_sourceanalysis (cfg,timelock_pre_cond1<font size="2">);<br>
<br>
<font size="2">source_post_cond1<font size="2">.<font size="2">avg.nai = source_post_cond1.avg.pow./source_pre_cond1.avg.pow;<br>
<br>
<font size="2">%PLOT<br>
<br>
<font size="2">source_post_<font size="2">cond1</font>.pos = <font size="2">template.pos;<br>
<font size="2">source_post_cond1.dim = template.dim;<br>
<font size="2">source_post_cond1.xgrid = t<font size="2">emplate.xgrid;<br>
<font size="2">source_post_cond1.ygrid = template<font size="2">.ygrid;<br>
<font size="2">source_post_cond1.z<font size="2">grid = template.zgrid; <br>
<br>
<font size="2">cfg = [];<br>
<font size="2">cfg.parameter =' avg.nai';<br>
<font size="2">interp_co<font size="2">nd1 = ft_sourceinterpolate (<font size="2">cfg,source_<font size="2">post_cond1,mri);<br>
<br>
<font size="2">cfg = [];<br>
<font size="2">cfg.funparameter = 'nai';<br>
<font size="2">cfg.method = 'ortho';<br>
<font size="2">cfg.location = 'max';<br>
<font size="2">cfg.funcolorlim = [1.5 2.0];<br>
<br>
<font size="2"><font size="2">ft_sourceplot (cfg,in<font size="2">terp_cond1);<br>
<br>
<font size="2"><font face="arial">%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</font></font><br>
<br>
<font size="2">I also tried i<font size="2">t using rawtrials, but with the same outcome (no activation visi<font size="2"><font face="arial">ble </font></font>in sourceplot). <br>
<font size="2">As I said, doing the same thing for cond1 wi<font size="2">thout using the common filter works perfectly fin<font size="2">e</font>. <br>
<br>
<font size="2"><font size="2">Does anybody have an idea what <font size="2">might be my mistake</font><font size="2">?</font>. <br>
<br>
<font size="2">Thank you<font size="2"> a lot for your help!</font><br>
<br>
<font size="2">Ninja</font><br>
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