Dear Donna, Thank you very much for your clarifying comment, I will use the NIfTI format instead.
Wish you happiness and prosperity in the year ahead! Chao-Gan On Sat, Jan 1, 2011 at 12:32 AM, Donna Dierker <[email protected]>wrote: > Hi Yan, > > This is why we prefer people use NIFTI volumes, rather than old Analyze > .hdr/.img pairs. The latter do not specify orientation, which in the case > of SPM2 volumes depends on one of your settings. It sounds like your > setting wrote volumes right-on-left, rather than left-on-left, which is > what Caret assumes. There are a couple of work-arounds: > > * Write your volume out as NIFTI and map the NIFTI volume (recommended). > > * Use File: Open Data File: Volume Functional File and indicate that the > volume is right-on-left. > > Then, instead of mapping volume from disk, map volume from Caret (or > loaded volume). > > Today is a Wash U holiday, so we're all at home until Monday. > > Donna > > > Dear caret experts! > > > > Happy New Year! > > > > I am trying to map a functional volume to a surface via Munu*: > Attributes: > > Map Volume(s) to Surface(s)*. > > > > I chose *Map to Caret With Atlas* with the following options: Space: > > *SPM2*; > > Atlas: *PALS_B12 Multi-Fid Map LEFT hemisphere (73730 nodes), SPM2 space* > > > > This means the functional volume will be mapped to the left hemisphere > > surface. > > > > However, when I see the results, I can see activations on the right > > hemisphere. > > [Page Selection: *Overlay/Underlay - Surface*: *Primary Overlay: Metric*: > > MFM LEFT - SPM_T_0001.hdr]. I clicked on Toollbar: *Model*: *FIDUCIAL > > Human. > > PALS_B12.RIGHT_AVG_B1-12.FIDUCIAL_SPM2.clean.73730.coord* to see if there > > is > > any activation on the right hemisphere. Surprisingly, I see the > activation > > on the right hemisphere! > > > > Why the activation appears on the right hemisphere even I just mapped the > > volume to the left hemisphere surface? [*PALS_B12 Multi-Fid Map LEFT > > hemisphere (73730 nodes), SPM2 space]* Must I just ignore the activation > > on > > the right hemisphere? Thank you very much! > > > > Best wishes! > > > > Yours Sincerely, > > YAN Chao-Gan > > > > -- > > YAN Chao-Gan, Ph.D. Candidate > > State Key Laboratory of Cognitive Neuroscience and Learning > > Beijing Normal University > > Beijing, China, 100875 > > Phone: +86-10-58801023 > > [email protected] > > http://www.restfmri.net/forum/yanchaogan > > _______________________________________________ > > caret-users mailing list > > [email protected] > > http://brainvis.wustl.edu/mailman/listinfo/caret-users > > > > _______________________________________________ > caret-users mailing list > [email protected] > http://brainvis.wustl.edu/mailman/listinfo/caret-users > -- YAN Chao-Gan, Ph.D. Candidate State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal University Beijing, China, 100875 Phone: +86-10-58801023 [email protected] http://www.restfmri.net/forum/yanchaogan
_______________________________________________ caret-users mailing list [email protected] http://brainvis.wustl.edu/mailman/listinfo/caret-users
