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<p class="MsoNormal">Hi Peter, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Would also be interested in the answer to your first question – it is not clear how Fieldtrip combines MAGS+GRADS using ft_sourceanalysis/ft_prepareleadfield.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For your second question I don’t think there is a ‘right’ answer & it depends how aggressively you’ve Maxfiltered… as a rule of thumb, this is the code I use:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="mso-element:para-border-div;border:dashed #CCCCCC 1.0pt;padding:6.0pt 6.0pt 6.0pt 6.0pt;background:#F7F9FA">
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<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg =
</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">[]</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-align:justify;background:#F7F9FA;border:none;padding:0cm">
<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg.</span><span style="font-size:9.0pt;font-family:Consolas;color:#006600;mso-fareast-language:EN-GB">method</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">
= </span><i><span style="font-size:9.0pt;font-family:Consolas;color:gray;mso-fareast-language:EN-GB">'pca'</span></i><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<div style="mso-element:para-border-div;border:dashed #CCCCCC 1.0pt;padding:6.0pt 6.0pt 6.0pt 6.0pt;background:#F7F9FA">
<p class="MsoNormal" style="text-align:justify;background:#F7F9FA;border:none;padding:0cm">
<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg.</span><span style="font-size:9.0pt;font-family:Consolas;color:#006600;mso-fareast-language:EN-GB">updatesens</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">
= </span><i><span style="font-size:9.0pt;font-family:Consolas;color:gray;mso-fareast-language:EN-GB">'no'</span></i><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg.</span><span style="font-size:9.0pt;font-family:Consolas;color:#006600;mso-fareast-language:EN-GB">channel</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">
= </span><i><span style="font-size:9.0pt;font-family:Consolas;color:gray;mso-fareast-language:EN-GB">'MEGMAG'</span></i><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-align:justify;background:#F7F9FA;border:none;padding:0cm">
<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">comp = ft_componentanalysis</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">(</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg,
data</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">)</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-align:justify;background:#F7F9FA;border:none;padding:0cm">
<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB"> <o:p></o:p></span></p>
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<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg =
</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">[]</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<div style="mso-element:para-border-div;border:dashed #CCCCCC 1.0pt;padding:6.0pt 6.0pt 6.0pt 6.0pt;background:#F7F9FA">
<p class="MsoNormal" style="text-align:justify;background:#F7F9FA;border:none;padding:0cm">
<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg.</span><span style="font-size:9.0pt;font-family:Consolas;color:#006600;mso-fareast-language:EN-GB">updatesens</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">
= </span><i><span style="font-size:9.0pt;font-family:Consolas;color:gray;mso-fareast-language:EN-GB">'no'</span></i><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<div style="mso-element:para-border-div;border:dashed #CCCCCC 1.0pt;padding:6.0pt 6.0pt 6.0pt 6.0pt;background:#F7F9FA">
<p class="MsoNormal" style="text-align:justify;background:#F7F9FA;border:none;padding:0cm">
<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg.</span><span style="font-size:9.0pt;font-family:Consolas;color:#006600;mso-fareast-language:EN-GB">component</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">
= comp.</span><span style="font-size:9.0pt;font-family:Consolas;color:#006600;mso-fareast-language:EN-GB">label</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">(</span><span style="font-size:9.0pt;font-family:Consolas;color:#CC66CC;mso-fareast-language:EN-GB">51</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">:</span><span style="font-size:9.0pt;font-family:Consolas;color:#B1B100;mso-fareast-language:EN-GB">end</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">)</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">data_fix = ft_rejectcomponent</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">(</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">cfg,
comp</span><span style="font-size:9.0pt;font-family:Consolas;color:#66CC66;mso-fareast-language:EN-GB">)</span><span style="font-size:9.0pt;font-family:Consolas;color:black;mso-fareast-language:EN-GB">;<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Robert Seymour (PhD Student, Aston Brain Centre)<o:p></o:p></p>
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