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<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">Dear Fieldtrippers,<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">Now, I work
on EEG data which is exported from EEGlab as segmented data. I try to remove
eye blinks from the data and I wonder something about ft_componentanalysis
function. When I performed fastica to remove the eye blink component, I realized
that it changes the form of EEG in addition to removing the related component (please
s</span><span lang="EN-US">ee the attached files, before and after; scales are the same). I cannot understand
the reason. It is not because demean application, I checked it. </span><br><span lang="EN-US"></span></p><p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">Do you have any
other idea? By the way, I used averaged referencing on EEGlab. Also please find
the script that I used below.<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US"><span> </span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">cfg<span>            </span>= [];<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">cfg.method<span>     </span>= 'fastica';<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">cfg.channel<span>       </span>= {'all', '-VEOG'};<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">comp<span>           </span>= ft_componentanalysis(cfg, data);<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US"><span> </span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">cfg = [];<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">cfg.component
= [5]; <span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">data =
ft_rejectcomponent(cfg, comp, data)<span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US"><span> </span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">Also I
wonder one more thing, what is the mission of cfg.updatesens parameter in ft_ componentanalysis
function? <span></span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US"><span> </span></span></p>

<p class="MsoNormal" style="margin:0cm 0cm 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif"><span lang="EN-US">Many thanks
in advance,<span></span></span></p>

<span style="font-size:11pt;line-height:107%;font-family:"Calibri",sans-serif" lang="EN-US">Elif</span>



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