Re: [Freesurfer] problems with cortical surface area maps

2014-05-31 Thread Anderson M. Winkler
Hi Lars, This pattern is because the faces in a geodesic sphere don't have all identical sizes, even if the original icosahedron was perfectly regular, i.e., a Platonic polyhedron. We describe this phenomenon here , and give a simple formula that

Re: [Freesurfer] Longitudinal data for cross sectional individual differences study

2014-05-31 Thread Martin Reuter
Hi Mike, Yes, take the results from the longitudinal stream, they are less noisy. Best Martin Sent via my smartphone, please excuse brevity. Original message From: Michael Kranz Date:05/31/2014 10:09 AM (GMT-05:00) To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer]

[Freesurfer] Longitudinal data for cross sectional individual differences study

2014-05-31 Thread Michael Kranz
Hi Freesurfers, Just wanted to verify: I have ran my subjects through the longitudinal processing stream (two time points a couple weeks apart). I want to predict cognitive performance (from the first time point) with Freesurfer stats. As I have the longitudinal data available, would it be bette