<div dir="ltr">In the main beamformer tutorial (<a href="http://fieldtrip.fcdonders.nl/tutorial/beamformer">http://fieldtrip.fcdonders.nl/tutorial/beamformer</a>), the common filter is computed as follows:<br><br><pre class="" style="padding:0.5em;margin-top:0px;font-size:12px;border:1px dashed rgb(204,204,204);color:rgb(0,0,0);overflow:hidden;font-family:Consolas,'Andale Mono',Menlo,Monaco,monospace;white-space:pre-wrap;width:640px;text-align:justify;background-color:rgb(247,249,250)">
cfg.grid.filter = sourceAll.avg.filter;
sourcePre_con = ft_sourceanalysis(cfg, freqPre );
sourcePost_con = ft_sourceanalysis(cfg, freqPost);</pre><div>However, in the separate common filters example script (<a href="http://fieldtrip.fcdonders.nl/example/common_filters_in_beamforming">http://fieldtrip.fcdonders.nl/example/common_filters_in_beamforming</a>), the common filter is much more complex. </div>
<div><br></div><div>I've created working versions of both common filters for DICS, as well as a working version of the 'simple' common filter for LCMV. I have a version of the 'complex' common filter that should work, but it usually chews up my computer's RAM (I have 16gb) and crashes matlab. The DICS one is also slow, but not so bad that it crashes. However, I couldn't imagine running it on all my datasets and being able to do any stats on the data without my computer crashing.</div>
<div><br></div><div>Before I post the code to see if maybe there is something wrong with it causing the memory overloads, I was wondering if anyone could explain to me what exactly the differences between the two methods are, and if it is even necessary for me to get the more complex common filter working? The simple common filters seem to work fine, but they could be affecting the data in ways that are not obvious, so I want to make sure.</div>
<div><br></div><div>As always, thank you Fieldtrippers</div><div><br></div>-- <br><div dir="ltr">Max Cantor<div>Lab Manager</div><div>Computational Neurolinguistics Lab</div><div>University of Michigan</div></div>
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