Re: [Freesurfer] Why the .auto.-files?

2007-02-23 Thread Bruce Fischl
they are initially the same, but if you manually intervene (edit), then they will differ and we'll be able to tell and avoid overwriting your edits On Sat, 24 Feb 2007, Oddbjørn Sæther wrote: Hi, what is the meaning of the .auto.-files generated? In autorecon1 the brainmask.auto.mgz is genera

[Freesurfer] Why the .auto.-files?

2007-02-23 Thread Oddbjørn Sæther
Hi, what is the meaning of the .auto.-files generated? In autorecon1 the brainmask.auto.mgz is generated, and thereafter copied to brainmask.mgz. The same for aseg.auto.mgz in autorecon2. What is the difference between "with/without" auto? Thanks in advance, oddbjørn ___

Re: [Freesurfer] (no subject)

2007-02-23 Thread Nick Schmansky
Giri and Binyam, This problem was encountered once before (by Binyam), and I was not able to recreate the segmentation fault locally, so can one or both of you do the following to help me debug this problem? I have posted a version of mri_ca_register which contains the debugging symbols here: ft

RE: [Freesurfer] surface area

2007-02-23 Thread Bruce Fischl
I agree. You could look at the jacobians across subjects, which will sort of get at what you want, or surface area by parcellation unit is a good idea. On Fri, 23 Feb 2007, Don Hagler wrote: Just a comment: Surface area on a vertex-wise basis doesn't seem very informative. Before topology fi

RE: [Freesurfer] surface area

2007-02-23 Thread Don Hagler
Just a comment: Surface area on a vertex-wise basis doesn't seem very informative. Before topology fixing, the surface area should be about the same for all vertices (differences should be more or less random). Topology fixing will add or remove vertices, so the surface area in a "fixed" regi

RE: [Freesurfer] importing EEG coordinates in free surfer

2007-02-23 Thread Don Hagler
To get your coordinates into freesurfer space, you need to register them with the T1 image. You could in theory do this with tkmedit, but in my experience, the headpoints interface is broken. I do the registration (manually) with a custom matlab program, but it requires that you have generate

Re: [Freesurfer] Topology fixing

2007-02-23 Thread Bruce Fischl
did you look at the surface? Sounds like the cerebellum or skull is attached On Fri, 23 Feb 2007, Juergen Haenggi wrote: Dear Freesurfer users the topology fixer is running since about 18 hours on the same defect Correcting defect 100 (vertices=23181, convex hull=7929) In contrast to the oth

[Freesurfer] Topology fixing

2007-02-23 Thread Juergen Haenggi
Dear Freesurfer users the topology fixer is running since about 18 hours on the same defect Correcting defect 100 (vertices=23181, convex hull=7929) In contrast to the other defects, the number of vertices involved in this defect is very large. Any idea? Thanks in advance Best regards Juerge

[Freesurfer] importing EEG coordinates in free surfer

2007-02-23 Thread abel cruz vadell
Hi everyone I need to import EEG coordinates (obtained with Polhemus system in ASCII format) in the FreeSurfer workspace. My final aim is characterize small areas of the cortical surface (exactly the regions underlaying my sensors position) with typical parameters of FreeSurfer (cortical thikness