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<body lang="en-CH" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"><p><span style="padding: 3px 10px; border-radius: 5px; color: #ffffff; font-weight: bold; display: inline-block; background-color: #ff0000;"> External Email - Use Caution </span></p><p></p>
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<p class="MsoNormal"><span lang="FR-CH">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am using MNE for EEG analysis and source localization. My question is: does the computation of the FWD operator (lead-field matrix) depend on the marked bad channels (given in the info parameter)?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Additionally, can I use the same lead-field matrix on 2 recordings with different ‘bad’ channels marked (assuming the electrode position/digitalization and MRI data did not change)?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I saw that ‘_prep_eeg_channels()’ is called with ‘exlude=()’ by the preparation of the fwd solution computation; thus it seems to me that the bad channels parameter isn’t relevant to the fwd solution computation.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Could someone confirm it?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks, and have a great day,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Mathieu<o:p></o:p></span></p>
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