From fischl@nmr.mgh.harvard.edu Fri Jan 7 09:12:04 2011 From: Bruce Fischl To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] variance or stdev from average Date: Fri, 07 Jan 2011 09:12:02 -0500 Message-ID: In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1168749456723653848==" --===============1168749456723653848== Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hi Thomas, you can specify -s to generate means and variances, but I'm=20 pretty sure Doug has something more up-to-date to do this. cheers Bruce On Thu, 6 Jan=20 2011, Thesen, Thomas wrote: > Hi, > > I am using mris_average_curvature to create an average thickness map across= subjects (registered to fsaverage). > > The command line I am running is: > > mris_average_curvature lh.thickness lh sphere.reg subj01 subj02 .... subj2= 0 outputfile > > This produces the average, but my question is if there a way to also create= a measure of variability at the vertex level from that group, e.g. the assoc= iated variance or standard deviation? > > Thanks, > Thomas > > > > > ------------------------------------------------------------
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