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</font><p style="margin:0cm 0cm 0pt;line-height:normal" class="MsoNormal"><span style="font-family:"Times New Roman","serif";font-size:12pt">Dear all,</span></p><font size="3" face="Times New Roman">

</font><div style="margin:0cm 0cm 0pt;line-height:normal" class="MsoNormal"><span style="font-family:"Times New Roman","serif";font-size:12pt">I have a problem with distinguishing
skin potential artefacts and positive/negative shift in EEG due to brain
activity (such as LPP ...), especially when i'm working with event related
potentials. So I don't know if I am doing correct atefact removing or i am
deleting some valuabe data from eeg data. is there any criterion for this?</span></div><div style="margin:0cm 0cm 0pt;line-height:normal" class="MsoNormal"><span style="font-family:"Times New Roman","serif";font-size:12pt"></span> </div>

<div style="margin:0cm 0cm 0pt;line-height:normal" class="MsoNormal"><span style="font-family:"Times New Roman","serif";font-size:12pt">Thanks in advance,</span></div><div style="margin:0cm 0cm 0pt;line-height:normal" class="MsoNormal">

<span style="font-family:"Times New Roman","serif";font-size:12pt">Sahar</span></div><font size="3" face="Times New Roman">

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