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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi everyone!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I would like to report that fieldtrip’s
read_mri function complains about not finding the field with the transformation
matrix in our neuomag fiff files. The problem was fixed by my dear colleague
Hanneke by replacing<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<pre><font size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>if issubfield(hdr.voxel_trans, 'trans')<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'></span><span
id=line-14> transform = hdr.voxel_trans.trans;<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'></span><span
id=line-15> elseif issubfield(hdr.trans, 'trans'),<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'></span><span
id=line-16> transform = hdr.trans.trans;<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'></span><span
id=line-17>end<o:p></o:p></span></font></pre><pre><font size=2
face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>by<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>if isfield(hdr, 'voxel_trans')<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'></span><span
id=line-21> </span>transform = hdr.voxel_trans.trans;<o:p></o:p></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'></span><span
id=line-22> elseif isfield(hdr, 'trans')<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'></span><span
id=line-23> transform = hdr.trans.trans;<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'></span><span
id=line-24>end<o:p></o:p></span></font></pre><pre><font size=2
face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Maybe this can be incorporated in future versions. <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Then I do have two questions about beamforming. As I understand it, beamformer methods such as DICS are able to compute time courses of brain regions. How can I visualize the time signal of a voxel in fieldtrip?<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Then I found that after sorting out several trials in my experiment I was not able to compute the neural activity index anymore, as the noise estimates for the grid nodes were all either NANs or zeros. I this a known problem or did I make a mistake somewhere? How could it be fixed?<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Thank you very much for your support!<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Jan<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'> <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'><o:p> </o:p></span></font></pre>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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<p>----------------------------------</p>
<p>The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis.</p>
<p> http://listserv.surfnet.nl/archives/fieldtrip.html</p>
<p> http://www.ru.nl/fcdonders/fieldtrip/</p>