Hi all, just two quick questions: to what FS version is this related? And what is wrong to do if one does not have the fix? Using what stats/procedures?
Thanks, Andreia Quoting Douglas N Greve <gr...@nmr.mgh.harvard.edu>: >>> why would one control for total brain volume in doing vertex-based > analyses when the vertex-based measures are computed in standard space? > > The vertex-based measures are computed in individual space, not standard > space > doug > > > On 03/17/2014 05:12 PM, Narly Golestani wrote: >> Dear Doug, >> >> Many thanks for your answers. >> >> > 3. The bug was related to how the measures were converted to standard >> > space - I?d like to therefore confirm that when doing >> > surface/vertex-based analyses, it is not necessary to use total brain >> > volume as a covariate (whereas it is for ROI-based analyses). >> > >> This question has nothing to do with the bug. People generally use ICV >> or total brain volume when exploring cortical volume or surface area, >> but it is inappropriate for thicknss studies >> doug >> > >> >> Regarding the last point (which indeed has nothing to do with the bug, >> sorry for having given the impression that I thought that it did), why >> would one control for total brain volume in doing vertex-based >> analyses when the vertex-based measures are computed in standard >> space? I realize that this has to be done for ROI analyses since these >> measures are in native space. >> >> Thanks again, and best, >> Narly. >> >> >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > Phone Number: 617-724-2358 > Fax: 617-726-7422 > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > _______________________________________________ > 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
