regions of interest for source statistics

[Ingrid Nieuwenhuis]

Dear Marco,

You can use the AFNI brik file that is available from
http://afni.nimh.nih.gov/afni/doc/misc/ttatlas_tlrc , or use one of the WFU
atlases available from http://fmri.wfubmc.edu

For cfg.atlas you then specify the whole path to the atlas for instance:
cfg.atlas = /matlab/wfu_pickatlas/MNI_atlas_templates/aal_MNI_V4.img';

cfg.roi should be the name (or names) of the ROIs. You can use prepare_atlas
to see the precise names of the atlas you're using.

Note: The data on which you want to do sourcestatistics has to be normalized
to the MNI or Talairach coordinate system.

All the best,
Ingrid

-----Original Message-----
From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of Marco SPERDUTI
Sent: Monday, December 15, 2008 11:42 AM
To: FIELDTRIP at NIC.SURFNET.NL
Subject: [FIELDTRIP] regions of interest for source statistics

Dear all,

I would like to define regions of interest for sources statistics.

I found on the sourcestatics tutorial that i have to define these
parameters:

cfg.atlas        = filename of the atlas
cfg.roi          = cell-array with labels according to the atlas
cfg.avgoverroi   = 'yes' or 'no' (default = 'no')
cfg.hemisphere   = 'left', 'right', 'both', 'combined',
cfg.inputcoord   = 'mni' or 'tal'


what can I use as atlas? Do you have an example script for doing that?

thank you all,

Marco

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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. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.