<div>Dear Jörn,</div>
<div> </div>
<div>I tried to use the script you indicated me. It seems ok. I go further and I calculate the common filter for baseline and stimulus and then I run ft_sourceanalysis for baseline and stimulus (considering the common filter).</div>
<div> </div>
<div>After that (ft_sourceanalysis), that seems ok, I try to plot it.</div>
<div>Like in the tutoial I calculate the relative change in power.</div>
<div> </div>
<div>I use ft_sourceplot.</div>
<div> </div>
<div>I got an error I do not understand really. It says: "the function requires volume data as input".</div>
<div> </div>
<div>In the structure sourceDiff, there is a volume field. It is in .cfg.vol</div>
<div> </div>
<div>This is my script.</div>
<div>Am I missing something?</div>
<div> </div>
<div> cfg = [];<br> cfg.method = 'slice';<br> cfg.funparameter = 'avg.pow';<br> cfg.maskparameter = cfg.funparameter;<br> cfg.anaparameter = 0.5;<br> cfg.units = 'mm';<br>
cfg.vol = hdm; %I tried even: sourceDiff.cfg.vol; but it does not work</div>
<div> figure<br> ft_sourceplot(cfg,sourceDiff);</div>
<div> </div>
<div> </div>
<div>If someone has some idea, it would be really appreciated.</div>
<div> </div>
<div>Thanks again,</div>
<div> </div>
<div>Davide</div>
<div> </div>
<div> </div>
<div> </div>
<div><br><br> </div>
<div class="gmail_quote">On Fri, Oct 21, 2011 at 12:13 PM, "Jörn M. Horschig" <span dir="ltr"><<a href="mailto:jm.horschig@donders.ru.nl">jm.horschig@donders.ru.nl</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div text="#000000" bgcolor="#FFFFFF">Dear Davide,<br><br>I was hesitant to answer, because I thought others know more than me. But since none responded, I can try to help with my limited knowledge.<br><br>From my knowledge of source reconstruction, I can just say that if all your source reconstructions are in the same space (say, MNI), you can use the .pos from your template to overcome this problem. I am not using ft_volumenormalise, so I have no experience what is exactly going on there. I would assume, however, that volumenormalise will transofmr your source structures to a common space.<br>
However, I stick to normalizing the following way:<br><a href="http://fieldtrip.fcdonders.nl/example/create_single-subject_grids_in_individual_head_space_that_are_all_aligned_in_mni_space" target="_blank">http://fieldtrip.fcdonders.nl/example/create_single-subject_grids_in_individual_head_space_that_are_all_aligned_in_mni_space</a><br>
<br>Hope it helps at least a little bit.<br>Best,<br>Jörn
<div>
<div></div>
<div class="h5"><br><br>On 10/19/2011 6:12 PM, Davide Rivolta wrote:
<blockquote type="cite">
<div>Hi Michael,</div>
<div> </div>
<div>I am using the single shell (Nolte).</div>
<div> </div>
<div>The grid has 2340 positions, but I am not still using mni.</div>
<div> </div>
<div>Thanks,</div>
<div> </div>
<div>Davide<br><br></div>
<div class="gmail_quote">On Wed, Oct 19, 2011 at 5:44 PM, Michael Wibral <span dir="ltr"><<a href="mailto:michael.wibral@web.de" target="_blank">michael.wibral@web.de</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div style="BACKGROUND-COLOR: #ffffff; FONT-FAMILY: Verdana, Arial, sans-serif; FONT-SIZE: 10pt" bgcolor="#FFFFFF">Hi davide,<br><br>what headmodel and grid are you using?<br><br>Michael<br><br><br>
<blockquote style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; PADDING-TOP: 5px">
<hr>
<b>Von:</b> "Davide Rivolta" <<a href="mailto:drivolta81@gmail.com" target="_blank">drivolta81@gmail.com</a>><br><b>Gesendet:</b> Oct 19, 2011 3:54:37 PM<br><b>An:</b> "Email discussion list for the FieldTrip project" <<a href="mailto:fieldtrip@donders.ru.nl" target="_blank">fieldtrip@donders.ru.nl</a>><br>
<b>Betreff:</b> [FieldTrip] beamforming - normilise issue
<div>
<div><br><br>
<div>Dear all,</div>
<div> </div>
<div>I am trying to use beamforming for some MEG data.</div>
<div> </div>
<div>I have 1 condition, and I wish to compare it against the baseline. Ideally I wish to have the average of all group and statistically compare stimulus agains baseline..</div>
<div> </div>
<div>As such, for each subject I calculate the source for the baseline and the source for the stimulus (using a common filter as indicated on the website).</div>
<div> </div>
<div>I then call ft_sourceinterpolate and, since I wish to have a group analysis, ft_volumenormalise.</div>
<div>In order to compute the average, I call ft_sourcegrandaverage.</div>
<div> </div>
<div>Even though the help tells me that it is fine, the grandaverage does not work if the input is from the ft_volumenormalise. It is because there is not the ".pos" field!</div>
<div> </div>
<div>Am I doing something wrong?</div>
<div> </div>
<div>Any advice would be great.</div>
<div> </div>
<div>Thanks a lot,</div>
<div> </div>
<div>Davide</div></div></div></blockquote></div><br>_______________________________________________<br>fieldtrip mailing list<br><a href="mailto:fieldtrip@donders.ru.nl" target="_blank">fieldtrip@donders.ru.nl</a><br><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip" target="_blank">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br>
</blockquote></div><br><br clear="all"><br>-- <br>Davide Rivolta, PhD<br><br><br>
<fieldset></fieldset> <br><pre>_______________________________________________
fieldtrip mailing list
<a href="mailto:fieldtrip@donders.ru.nl" target="_blank">fieldtrip@donders.ru.nl</a>
<a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip" target="_blank">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a></pre></blockquote><br><br></div></div><pre cols="72">--
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands
Contact:
E-Mail: <a href="mailto:jm.horschig@donders.ru.nl" target="_blank">jm.horschig@donders.ru.nl</a>
Tel: <a href="tel:%2B31-%280%2924-36-68493" target="_blank" value="+31243668493">+31-(0)24-36-68493</a>
Web: <a href="http://www.ru.nl/donders" target="_blank">http://www.ru.nl/donders</a>
Visiting address:
Trigon, room 2.30
Kapittelweg 29
NL-6525 EN Nijmegen
The Netherlands</pre></div><br>_______________________________________________<br>fieldtrip mailing list<br><a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br><a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip" target="_blank">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br>
</blockquote></div><br><br clear="all"><br>-- <br>Davide Rivolta, PhD<br><br>