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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am currently source localising an effect using LCMV on Elekta MEG data. I have both gradiometers and magnetometers and have until recently treated these as the same when preparing the leadfield. However, after having had discussions with
my colleagues about the different units and strength for grads and mags, we are hesitant as to what might be the best way of selecting channels. I have searched the fiedltrip mailing list, and have found some answers, but nothing that I can say is very convincing.
Could someone point me in the right direction regarding this? Perhaps someone who has done some checks on using both grads and mags and using only grads or mags. We are interested in a deeper source, and naively thought that magnetometers would be necessary
to include. However, is this just as I say: naïve?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In the ft_prepareleadfield function I can see that gradiometers is the only channels that are thought of being included, so does fieldtrip actually expect us to exclude magnetometers?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kind regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:black;mso-fareast-language:EN-GB">Casper Kerrén, PhD student<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB">School of Psychology <br>
College of Life and Environmental Sciences <br>
University of Birmingham <br>
Edgbaston <br>
Birmingham B15 2TT<br>
e-mail: <a href="mailto:cxk699@student.bham.ac.uk">cxk699@student.bham.ac.uk</a> <br>
<br>
</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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