<html dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" id="owaParaStyle"></style>
</head>
<body fpstyle="1" ocsi="0">
<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hi All,
<div><br>
</div>
<div>I have a question regarding dipole fitting and aligning anatomical images and volume conduction models with MEG sensors.</div>
<div>I know a lot of other people have posted on related issues on this email list, but looking through previous emails, I can't see the solution to my current problems.</div>
<div>Any help, much appreciated.</div>
<div><br>
</div>
<div>Ultimately, when I use <span style="font-family: Courier; font-size: 10px;">ft_dipolefitting </span><span style="font-size: 10pt;">and plot with </span><span style="font-family: Courier; font-size: 10px;">ft_sourceplot</span>,<span style="font-family: Courier; font-size: 10px;"> </span><span style="font-size: 10pt;">I
end up with 'dipoles' appearing outside the head......</span></div>
<div><span style="font-size: 10pt;"><br>
</span></div>
<div><font size="2">Checking the registration of my volume conduction model with sensors, it also appears the volume conduction model is aligned </font>unrealistically<font size="2"> high within the sensors (see jpg).</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Yes, I have checked that the coordsys and units are the same for sensors, mri, segmented mri and volume conduction model. I am using a neuromag system, and use </font><span style="font-family: Courier; font-size: 10px;">ft_volumerealign </span><span style="font-size: small;">with
</span><span style="font-family: Courier; font-size: 10px;">cfg.method = </span><span style="font-family: Courier; font-size: 10px; color: rgb(178, 69, 243);">'interactive' </span><span style="font-size: small;">and </span><span style="font-family: Courier; font-size: 10px;">cfg.coordsys
= </span><span style="font-family: Courier; font-size: 10px; color: rgb(178, 69, 243);">'neuromag' </span><span style="font-size: small;">to bring the MRI into neuromag coordinates.</span></div>
<div><span style="font-size: small;"><br>
</span></div>
<div><font size="2">I can't see where co-registration problems are arising, or why the dipoles should be being shown as appearing outside the head.</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">I have fussed over this for so long, if anyone can point me towards the light I will be utterly grateful.....</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Regards,</font></div>
<div><font size="2">Kaelasha Tyler</font></div>
<div><font size="2">PhD Candidate</font></div>
<div><font size="2">Brain and Psychological Sciences Research Centre</font></div>
<div><font size="2">Swinburne University</font></div>
<div><font size="2">Australia</font></div>
<div><font size="2"><br>
</font></div>
<div style="font-family: Times New Roman; color: #000000; font-size: 16px">
<hr tabindex="-1">
<div id="divRpF2272" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Kaelasha Tyler<br>
<b>Sent:</b> Tuesday, 1 April 2014 2:32 AM<br>
<b>To:</b> fieldtrip@science.ru.nl<br>
<b>Subject:</b> ft_volumerealign and ft_dipolefitting<br>
</font><br>
</div>
<div></div>
<div>
<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">Hi All,
<div><br>
</div>
<div>I have a question regarding dipole fitting and aligning anatomical images and volume conduction models with MEG sensors.</div>
<div>I know a lot of other people have posted on related issues on this email list, but looking through previous emails, I can't see the solution to my current problems.</div>
<div>Any help, much appreciated.</div>
<div><br>
</div>
<div>Ultimately, when I use <span style="font-family:Courier; font-size:10px">ft_dipolefitting </span><span style="font-size:10pt">and plot with </span><span style="font-family:Courier; font-size:10px">ft_sourceplot</span>,<span style="font-family:Courier; font-size:10px"> </span><span style="font-size:10pt">I
end up with 'dipoles' appearing outside the head......</span></div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><font size="2">Checking the registration of my volume conduction model with sensors, it also appears the volume conduction model is aligned </font>unrealistically<font size="2"> high within the sensors (see jpg).</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Yes, I have checked that the coordsys and units are the same for sensors, mri, segmented mri and volume conduction model. I am using a neuromag system, and use </font><span style="font-family:Courier; font-size:10px">ft_volumerealign </span><span style="font-size:small">with
</span><span style="font-family:Courier; font-size:10px">cfg.method = </span><span style="font-family:Courier; font-size:10px; color:rgb(178,69,243)">'interactive' </span><span style="font-size:small">and </span><span style="font-family:Courier; font-size:10px">cfg.coordsys
= </span><span style="font-family:Courier; font-size:10px; color:rgb(178,69,243)">'neuromag' </span><span style="font-size:small">to bring the MRI into neuromag coordinates.</span></div>
<div><span style="font-size:small"><br>
</span></div>
<div><font size="2">I can't see where co-registration problems are arising, or why the dipoles should be being shown as appearing outside the head.</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">I have fussed over this for so long, if anyone can point me towards the light I will be utterly grateful.....</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Regards,</font></div>
<div><font size="2">Kaelasha Tyler</font></div>
<div><font size="2">PhD Candidate</font></div>
<div><font size="2">Brain and Psychological Sciences Research Centre</font></div>
<div><font size="2">Swinburne University</font></div>
<div><font size="2">Australia</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2"><br>
</font></div>
<div><span style="font-family:Courier; font-size:10px"><br>
</span></div>
</div>
</div>
</div>
</div>
</body>
</html>