Re: [Freesurfer] xhemi correct for multiple comparisons

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

---

Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer