<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><div dir="ltr">I have not done much testing with BTi system data, but it's on the to-do list (so t<span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">he bullet points of caveats have not changed)</span>. Please feel free to try and see how it works for your data. You might try setting `ignore_ref=True`, I seem to remember someone working with BTi data and having this be the case (though I could be wrong about this).<div><div><br></div><div>Eric</div><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Jun 12, 2018 at 11:31 AM Maria Hakonen <<a href="mailto:maria.hakonen@gmail.com">maria.hakonen@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><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><div dir="ltr"><div><span style="font-family:arial,helvetica,sans-serif">Dear all,</span><br></div><div><font face="arial, helvetica, sans-serif"><br></font></div><div><font face="arial, helvetica, sans-serif">Does anyone have experience of the use of Maxwell filter with<span style="color:rgb(44,62,80);background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"> <span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">4-D Neuroimaging / BTI data? Is there something specific e.g. with the parameters that I should take into account if I apply Maxwell filter to <span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">4-D Neuroimaging / BTI data, or would it be better not to use Maxwell filter</span>? The mne python documentation says " <span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Use of Maxwell filtering routines with non-Elekta systems is currently<span> </span></span><span style="box-sizing:border-box;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">experimental</span><span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">.</span> </span></span></font><span style="color:rgb(44,62,80)"><font face="arial, helvetica, sans-serif">Worse results for non-Elekta systems are expected due to (at least):</font></span></div><div><font face="arial, helvetica, sans-serif"><span style="color:rgb(44,62,80);background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><blockquote style="box-sizing:border-box;padding:0px 0px 0px 15px;margin:0px 0px 20px;border-left:5px solid rgb(238,238,238);background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div style="box-sizing:border-box"><ul class="m_8976094315267759458gmail-simple" style="box-sizing:border-box;margin-top:0px;margin-bottom:0px"><li style="box-sizing:border-box">Missing fine-calibration and cross-talk cancellation data for other systems.</li><li style="box-sizing:border-box">Processing with reference sensors has not been vetted.</li><li style="box-sizing:border-box">Regularization of components may not work well for all systems.</li><li style="box-sizing:border-box">Coil integration has not been optimized using Abramowitz/Stegun definitions."</li></ul></div></blockquote></span></span></font></div><div><font color="#2c3e50" face="arial, helvetica, sans-serif">Are there any updates to this information?</font></div><div><font color="#2c3e50" face="arial, helvetica, sans-serif"><br></font></div><div><font color="#2c3e50" face="arial, helvetica, sans-serif">Best,</font></div><div><font color="#2c3e50" face="arial, helvetica, sans-serif">Maria</font></div></div>
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