Re: [Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects

2013-03-12 Thread Laura M. Tully
is, MO 63110 Email: mha...@wustl.edu > > From: "Laura M. Tully" > Date: Saturday, March 9, 2013 5:58 PM > To: "Anderson M. Winkler" > Cc: free > Subject: Re: [Freesurfer] mean thickness covariate, mean area covariate, > & mri_anatomical_stats for multip

Re: [Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects

2013-03-11 Thread Michael Harms
Subject: Re: [Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects Hi Anderson, Thanks, that reference is particularly helpful. Re: the usage of the white versus pial area question - I believe that the default area calculation in freesurfer

Re: [Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects

2013-03-09 Thread Anderson M. Winkler
Hi Laura, I think yes, sounds right. Maybe run both ways and see if the results agree or differ. All the best, Anderson 2013/3/9 Laura M. Tully > Hi Anderson, > > Thanks, that reference is particularly helpful. > > Re: the usage of the white versus pial area question - I believe that the > defa

Re: [Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects

2013-03-09 Thread Laura M. Tully
Hi Anderson, Thanks, that reference is particularly helpful. Re: the usage of the white versus pial area question - I believe that the default area calculation in freesurfer is the white surface area, so unless one specifies the pial in calculations, the standard surface area output for surface a

Re: [Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects

2013-03-09 Thread Anderson M. Winkler
Hi Laura, >1. Is there a paper that I could cite that recommends using mean >cortical thickness rather than ICV? > > If it helps, we used cortical thickness and area as covariate for the respective analysis of regional thickness and area. Brain volume, which is more closely related to ICV

[Freesurfer] mean thickness covariate, mean area covariate, & mri_anatomical_stats for multiple subjects

2013-03-09 Thread Laura M. Tully
Hello freesurfers, It appears that prior discussions on the listserv have recommended using mean cortical thickness (rather than ICV) as a covariate for thickness analyses (predominantly recommended by Michael Harms). I have three questions about this: 1. Is there a paper that I could cite th