Re: [Freesurfer] selxavg3-sess error: matrix is singular to working precision

Hmmm, not sure. Can you send your par file? Jeremy Elman wrote: Hello all, I am trying to run a first level analysis on a subject with selxavg3-sess but keep running into the same error. The dof file is created, but that is it. Any ideas what might be causing this? Below is the error given.

Re: [Freesurfer] active volume of surface-based analysis

I can't tell from your description what you are trying to do. Can you elaborate? doug Wang, Xin wrote: Hello, Freesurfer group, In the tutorial of surface-based fMRI analysis, the active volume are calculated from the entire depth of an given active vertex. I do not think it is the best way

Re: [Freesurfer] tkmedit

Hi Nils, I'm not sure what's going on and you have not specified enough info for me to find out. Please make sure to follow the steps here: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting so that we can quickly understand and resolve the problem. thanks doug Nils Rettby wrote: Hello, Using

[Freesurfer] active volume of surface-based analysis

Hello, Freesurfer group, In the tutorial of surface-based fMRI analysis, the active volume are calculated from the entire depth of an given active vertex. I do not think it is the best way to measure it since no all activities occupy the entire depth of cortex. A logical way to get accurate acti

Re: Fwd: [Freesurfer] Incorrect correspondence in the aparc+aseg.mgz volume?

Thanks for your help, Nick and Bruce. I'm trying to regenerate this volume in order to verify that this is, in fact, an older bug that has been resolved in FS4. I'm assuming that by the last (fast) steps, you meant aparc2aseg and wmparc, so I used this command line: recon-all -s 2368-004-01 -aparc

Re: [Freesurfer] sulcal width

no, we've never written anything. Is there a standard technique for calculating it? Distance outwards along the surface normal from pial to pial? cheers, Bruce On Mon, 30 Mar 2009, Prapti Gautam wrote: Dear Freesurfers, Is there a reliable way to measure sulcal widths from T1 images usin

[Freesurfer] GM

hello I want to use GM volume stats, i don't know whether it is or not, where? I had understood that FS does not calculate the total GM volume, how can I make it? and can I calculate it for an individual ROI on a specific area? Regards Gabriel

RE: [Freesurfer] GM

Aseg.stat Sent from my Nokia phone @E71 -Original Message- From: Gabriel Go.Es. Sent: 30/03/2009 07:14:32 Subject: [Freesurfer] GM hello I want to use GM volume stats, i don't know whether it is or not, where? I had understood that FS does not calculate the total GM volume, how c

[Freesurfer] GM

hello I want to use GM volume stats, i don't know whether it is or not, where? I had understood that FS does not calculate the total GM volume, how can I make it? and can I calculate it for an individual ROI on a specific area? Regards Gabriel ___

RE: Res: [Freesurfer] Doubt about GM

Did you check aseg.stat Sent from my Nokia phone @E71 -Original Message- From: Kelly Silva Sent: 30/03/2009 05:46:36 To: Bruce Fischl Cc: freesurfer Subject: Res: [Freesurfer] Doubt about GM Hello,    Thank you for your answer, Bruce. I am looking for the colheader that brings the tota

Res: [Freesurfer] Doubt about GM

Hello,    Thank you for your answer, Bruce. I am looking for the colheader that brings the total GM and the GM for each hemisphere, but I did not find. Can you tell me how its the file and how is the name of the variable?     Thanks and regards, Kelly Veja