If you are just doing a simple interhemispheric difference, then
On 12/09/2013 11:53 AM, krista kelly wrote:
> Thanks Doug! I'll try that instead.
>
> Also, do you or anyone else happen to have the answers to my other
> questions (reposted below):
>
> 1) When viewing the results in tksurfer, which color represents "left
> hemisphere is larger" and which represents "right hemisphere is larger"?
yellow/red will be left>right and blue left<right
>If you run mri_glmfit-sim with --help you will see a list of output
> 2) I have no idea how to view the results in tksurfer AFTER performing
> the step of correcting for multiple comparisons. Any suggestions?
files with descriptions for each. Choose the one you want and run
tksurfer on it (eg, tksurfer fsaverage_sym lh inflated -aparc -overlay
csdbase.sig.cluster.mgh )
doug
>
> Thanks!
> Krista
>
>
>
>
> On Mon, Dec 9, 2013 at 11:09 AM, Douglas N Greve
> <mailto:Freesurfer@nmr.mgh.harvard.edu>> <greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>> wrote:
>
> Run mris_preproc with --paired-diff-norm which will then compute
> LI = (L-R)/(.5*(L+R))
> Note that some people use
> LI = (L-R)/(L+R)
> If that is what you want, then divide the mris_preproc result by 2
>
> doug
>
> On 12/08/2013 08:45 PM, krista kelly wrote:
> > Hello,
> >
> > I'm analysing interhemispheric differences using xhemi. I have
> > followed the instructions on the webpage with no problems. I do
> have a
> > few questions though.
> >
> > 1) When viewing the results in tksurfer, which color represents
> "left
> > hemisphere is larger" and which represents "right hemisphere is
> larger"?
> >
> > 2) I have no idea how to view the results in tksurfer AFTER
> performing
> > the step of correcting for multiple comparisons. Any suggestions?
> >
> > 3) I've noticed from the archives that some people are performing
> > laterality indices. How would I calculate laterality indices?
> >
> > Thanks!
> > Krista
> >
> >
> >
> >
> > _______________________________________________
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> > Freesurfer@nmr.mgh.harvard.edu
> > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer> greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
>
> --
> Douglas N. Greve, Ph.D.
> MGH-NMR Center
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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422
Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
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