[Freesurfer] error in analyze command failed: mri_concat

2012-11-13 Thread Berg, S.F. van den
Hello Freesurfer experts, I have got some problems with qdec. For testing my data i make an design with age, sexe and right and left hippocampus. The same design as the tutorial on the freesurfer wiki. When starting anlalyze i get an Error in Analyze: command failed: mri_concat /data1/project

Re: [Freesurfer] error in analyze command failed: mri_concat

2012-11-16 Thread Berg, S.F. van den
Hi Doug, I run the mri_concat command with 9 subjects in the command line. for the LH thickness and volume. A segmentation fault is the problem. What do i have to do in this case? Many thanks, Stan freesurfer-Linux-centos5_x86_64-dev-20110315 SUBJECTS_DIR /data1/proje

[Freesurfer] correcting for discrete variables in Qdec

2012-11-29 Thread Berg, S.F. van den
Hi Freesurfer Experts, In my design i want to use a general linear model tot relate cognitive performance and cortical thickness. I want to control for age, total gray matter, gender and education. I have two discrete variables, including gender (0,1) and Education (1-7). The problem is that

[Freesurfer] nuisance variable ICV

2012-12-10 Thread Berg, S.F. van den
Hi Freesurfer Experts, Just to make it sure i have a question about correcting for cranial size. I compared two groups, 100 patients versus 50 Controls. I entered a discrete variable 'groups' (Patients: 1 and controls:2) in qdec. For cortical thickness difference between these groups, do i

Re: [Freesurfer] mean cluster thickness in qdec

2013-01-14 Thread Berg, S.F. van den
each cluster. This is a simple text file. On 01/14/2013 09:08 AM, Berg, S.F. van den wrote: > > Dear Freesurfer Experts, > > I would like the mean thickness measures of each cluster i found in qdec. > > I used qdec for a group comparison in cortical thickness between a > patient

[Freesurfer] Difficult results from our PD data

2013-02-05 Thread Berg, S.F. van den
Dear Freesurfer experts, We investigated the relation between cortical thickness and performance on several cognitive tasks within a large group of Parkinson’s disease patients, but are slightly puzzled by the results. We obtained several, both in the vertex-wise analysis in qdec and in the

Re: [Freesurfer] Difficult results from our PD data

2013-02-06 Thread Berg, S.F. van den
_ From: Bruce Fischl [fis...@nmr.mgh.harvard.edu] Sent: 05 February 2013 15:54 To: Berg, S.F. van den Cc: Freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Difficult results from our PD data Hi Stan we have found positive correlations between performance (in this case CVLT) and thickness