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<p>Dear all, <br>
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<p>we are currently analyzing the data from a simultaneoues EEG-fMRI experiment in the Brain Vision Analyzer (BVA) with a little help from the EEGlab. To remove the BCG (cardioballistic) artefact we use the Pulse artefact correction in the BVA and ICAs. However,
we also want to check whether we would profit from using the FMRIB tools: We run the Remove pulse artefact function in the FMRIB before and after the Pulse artefact correction in the BVA. The question is: what is the optimal number of the PCs to specify in
the Optimal Basis Set. We use now 4 PCs before the Pulse artefact correction and 2 PCs after <span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">the Pulse artefact correction</span>. </p>
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<p>Does the number of the specified PCs depend oh how big the data is? <br>
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<p>We would appreciate any suggestions or recommendations. </p>
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<p>Kind regards,</p>
<p>Mariam<br>
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<div><font color="#000000" size="2" face="Cambria, serif">Mariam Kostandyan</font></div>
<div><font color="#000000" size="2" face="Cambria, serif">PhD student </font></div>
<div><font size="2" face="Cambria, serif"><span style="color:rgb(0,0,0)">University of Gent</span><span style="color:rgb(0,0,0); line-height:1.2em"><br>
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<div><font size="2" face="Cambria, serif"><span style="color:rgb(0,0,0); line-height:1.2em">Department of Experimental Psychology</span><br>
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<div><font face="Cambria, serif"><span style="line-height:14px; color:rgb(0,0,0); font-size:small">Henri Dunantlaan 2, </span><span style="line-height:14px; color:rgb(0,0,0); font-size:small">9000 Gent, </span><span style="color:rgb(0,0,0); font-size:small">Belgium</span></font></div>
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<div style="color:rgb(34,34,34); background-color:rgb(255,255,255)"><font color="#000000" size="2" face="Cambria, serif">Room 140.021</font></div>
<div style="color:rgb(34,34,34); background-color:rgb(255,255,255)"><font face="Cambria, serif"><font color="#000000" size="2"><span style="line-height:14px">Tel.: </span></font><span style="font-size:13.3333px">+32 9 264 6398</span></font></div>
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<div style="color:rgb(34,34,34); background-color:rgb(255,255,255)"><font size="2" face="Cambria, serif"><span style="color:rgb(0,0,0)">E-mail: </span><a tabindex="0" href="mailto:Mariam.Kostandyan@UGent.be" target="_blank" style="color:rgb(17,85,204); line-height:14px" id="NoLP">Mariam.Kostandyan@UGent.be</a><span style="color:rgb(0,0,0)"> </span><br>
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<div style="color:rgb(34,34,34); background-color:rgb(255,255,255)"><font color="#000000" size="2" face="Cambria, serif">E-mail: <a tabindex="0" href="mailto:kostandyan.m@gmail.com" target="_blank" style="color:rgb(17,85,204)" id="NoLP">kostandyan.m@gmail.com</a></font></div>
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