Re: [Freesurfer] Creating age-adjusted z score maps against a control group

Hi Freesurfer team,

Sorry for reposting. The previous email might have slipped through the cracks.

I was wondering if anyone know how to create subject-level Z score maps of thickness (against a set of healthy controls) after regressing out various covariates such as age / education ?

Thank you.

Best Wishes, Elijah

Dr. Elijah Mak, Research Associate Department of Psychiatry,  Old Age Psychiatry Group University of Cambridge Trinity College, CB21TQ, UK http://www.neuroscience.cam.ac.uk/directory/profile.php?fkm24

On 23 May 2017 at 09:21:24, Elijah Mak (fkm24@medschl.cam.ac.uk) wrote:

Hi Doug,

I have used fscalc to create subject-level Z score maps of cortical thickness against a set of healthy controls.

fscalc $i/surf/lh.fsaverage.mgh sub group_mean_control_lh.mgh div group_std_control_lh.mgh --o $i/surf/lh.Z.thickness.fsaverage.mgh; done

Beyond this, is there a way to adjust the Z score maps for age, and then produce an age-adjusted Z score map?

Thanks for your help.

Best Wishes, Elijah

Dr. Elijah Mak, Research Associate Department of Psychiatry,  Old Age Psychiatry Group University of Cambridge Trinity College, CB21TQ, UK http://www.neuroscience.cam.ac.uk/directory/profile.php?fkm24