You can copy the rh gyrification index to xhemi/surf/lh gyrification index, ie, copy it to xhemi/surf, but change the name so that it appears to be lh instead of rh doug
On 8/27/14 5:47 AM, angela.fav...@unipd.it wrote: > Hi Doug, > is there a way to perform asymmetry analyses for local gyrification index? > In my xhemi folders there is no LGI surface. > > thank you > Angela > > >> You can use --paired-diff-norm instead of --paired-diff, this will compute >> >> (L-R)/((L+R)/2) >> >> You can then divide the output by 2, eg, >> >> fscalc output.mgh div 2 -o output.div2.mgh >> >> doug >> >> >> >> >> On 8/24/14 9:52 AM, angela.fav...@unipd.it wrote: >>> Hi all, >>> I have a question about hemispheric asymmetry analyses. The example >>> given >>> in the wiki shows how to compare lh and rh using a paired t-test. Is it >>> right? >>> But how can I calculate (and then compare groups) the laterality index >>> (L-R)/(L+R)? >>> Thank you very much for any help >>> >>> Angela >>> >>> >>> >>> >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>> >>> >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >> >> >> The information in this e-mail is intended only for the person to whom it >> is >> addressed. If you believe this e-mail was sent to you in error and the >> e-mail >> contains patient information, please contact the Partners Compliance >> HelpLine at >> http://www.partners.org/complianceline . If the e-mail was sent to you in >> error >> but does not contain patient information, please contact the sender and >> properly >> dispose of the e-mail. >> >> >> > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
