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<p style="">Hello fieldtrippers,<br>
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<p style="">I would like to know if it is possible to determine the sources that correspond to a brain region as found by ft_volumelookup.<br>
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<p style="">I have used the following code:<br>
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<div style=""> % interpolate sources</div>
<div> mri = ft_read_mri('Subject01.mri');</div>
<div> mri = ft_volumereslice([], mri);</div>
<div> </div>
<div> % read in atlas from fieldtrip template</div>
<div> afni = ft_read_atlas( fullfile( matlabrootpath, 'Matlab/fieldtrip/template/atlas/afni/TTatlas+tlrc.HEAD'));</div>
<div> </div>
<div> % construct grid that lies only in grey matter</div>
<div> cfg = [];</div>
<div> cfg.mri = mri;</div>
<div> cfg.grid.warpmni = 'yes';</div>
<div> cfg.grid = afni;</div>
<div style=""> grid = ft_prepare_sourcemodel( cfg);<br>
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<div> </div>
<div> % Source Analysis: without contrasting condition</div>
<div> cfg = [];</div>
<div> cfg.channel = 'EEG';</div>
<div style=""> cfg.method = 'lcmv';<br>
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<div> cfg.grid = grid;</div>
<div> cfg.grid.outside = [];</div>
<div> cfg.vol = vol;</div>
<div> cfg.keepfilter = 'yes';</div>
<div> source = ft_sourceanalysis( cfg, timelock);</div>
<div> source.pos = source.pos( source.inside( :), :);</div>
<div> </div>
<div> % look up which virtual channels correspond to particular areas</div>
<div> % of the brain</div>
<div> cfg = [];</div>
<div> cfg.atlas = afni;</div>
<div> cfg.inputcoord = 'mni';</div>
<div> cfg.maskparameter = 'inside';</div>
<div style=""> labels = ft_volumelookup( cfg, source);<br>
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<p style="">It gives me a set of labels, but I dont know what sources are located in the brain regions found.<br>
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<p style="">I would like to somehow combine the sources in these brain regions, so that I am left with one source per brain region.<br>
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<p style="">Tyler<br>
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<div style="font-size:13px">*************************
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<div><font face="Arial"><i>Tyler Grummett ( BBSc, BSc(Hons I))</i></font></div>
<div><font face="Arial"><i>PhD Candidate</i></font></div>
<div><font face="Arial"><i>Brain Signals Laboratory</i></font></div>
<div><font face="Arial"><i>Flinders University</i></font></div>
<div><font face="Arial"><i>Rm 5A301</i></font></div>
<div><font face="Arial"><i>Ext 66124</i></font></div>
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