Re: [Freesurfer] pwd: permission denied

2012-03-06 Thread Marcel Zwiers
Hi Michael, Thanks for your help and suggestions! I'd have to try to recreate the error, but I have an idea of what it could be (assuming /home/control/marhoo/Projects/BIG/Freesurfer_CorticalThickness/BIG1026_1 is a directory). Actually not yet,

Re: [Freesurfer] mri_cvs_register on a 64-bit Mac crash PETSC ERROR

2012-03-06 Thread Bruce Fischl
Hi Rey, We are working on a 64 bit Mac version, but don't quite have one yet Cheers Bruce On Mar 5, 2012, at 6:36 PM, Rey Ramirez rrra...@uw.edu wrote: Dear colleagues, especially Lilla Zollei, I am trying to run mri_cvs_register on a 64-bit Mac but it crashes at the same place where

[Freesurfer] About recon-all

2012-03-06 Thread bowang21
Dear all I just want to ask a sample question.What's the best number of the parameter of 'recon-all' , -i invol1 -i invol2.That is, how many slices should we use?If the invol1 is the fist slice of the fMRI series or any one of the data? Yours

Re: [Freesurfer] About recon-all

2012-03-06 Thread Bruce Fischl
Hi, recon-all takes an anatomical volume as input, not a functional one. You can give it any slice that is in the correct series (just specify one) and it will find the others. cheers Bruce On Tue, 6 Mar 2012, bowan...@mail.ustc.edu.cn wrote: Dear all I just want to ask a sample

[Freesurfer] Research scientist in MRI imaging – three-year contract available immediately

2012-03-06 Thread Frédéric Andersson
Research scientist in MRI imaging – three-year contract available immediately The Physiology of reproduction and behaviour combined research unit at the INRA centre of Tours is recruiting a research scientist specialised in MRI for its imaging platform. This internationally recognised

Re: [Freesurfer] about QAtools

2012-03-06 Thread Louis Nicholas Vinke
Hi Chunhui, I believe this is a dependency issue, since the convert command is part of the ImageMagick Studio. You'll need to download and install the binaries (http://www.imagemagick.org/). I'll make of note of this on the wiki page. -Louis On Tue, 6 Mar 2012, chenchunhuichina wrote: Dear

[Freesurfer] PhD / Post-Doctoral position – Neuroimaging of language and audition, University of Geneva

2012-03-06 Thread Narly GOLESTANI
PhD / Post-Doctoral position – Neuroimaging of language and audition, University of Geneva   - Applications are invited at the PhD or at the Post-Doctoral level at the

Re: [Freesurfer] overlaying sig.mgh onto normalized individual brains

2012-03-06 Thread Douglas N Greve
Hi Catherine, Does the individual have good surfaces? If so, then it would be better to map the sig.mgh into the individual using the surface transform, something like (run with --help for more info): mri_surf2surf --srcval sig.mgh --srcsubject fsaverage --hemi lh --trgsubject yoursubject

[Freesurfer] Matched sample

2012-03-06 Thread Jacquelynn Nicosia Copeland
... URL: http://mail.nmr.mgh.harvard.edu/pipermail/freesurfer/attachments/20120306/08fc9f2c/attachment-0001.html -- Message: 8 Date: Tue, 6 Mar 2012 10:44:35 +0100 (CET) From: Marcel Zwiers m.zwi...@fcdonders.ru.nl Subject: Re: [Freesurfer] pwd: permission denied

Re: [Freesurfer] Matched sample

2012-03-06 Thread Douglas N Greve
/attachments/20120306/08fc9f2c/attachment-0001.html -- Message: 8 Date: Tue, 6 Mar 2012 10:44:35 +0100 (CET) From: Marcel Zwiers m.zwi...@fcdonders.ru.nl Subject: Re: [Freesurfer] pwd: permission denied To: Michael Nowak mno...@trinity.edu, freesurfer

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Douglas N Greve
Allie, to be more precise, you have selected controlpatient regressing out the effects of age. This second part is the key. If you were to trace the regression lines back to age=0 (the meaning of regressing out age), then controlpatient by a wide margin. But you have a problem here in that

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Douglas N Greve
Hi Allie, yes, it means that each group is affected differently by age. The controls are increasing their thickness with age in this area (which seems strange, usually you expect general decreases with age). You might check the quality of the surfaces in this area. doug Allie Rosen wrote: Hi

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Allie Rosen
If this makes sense, there aren't any topological defects in the regions of other similar results. On Tue, Mar 6, 2012 at 4:05 PM, Allie Rosen rosen.al...@gmail.com wrote: Hi Doug, Yes, I think there actually may be a topologic defect in this area, although not directly where the cluster is

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Douglas N Greve
It might, don't know Allie Rosen wrote: Hi Doug, Yes, I think there actually may be a topologic defect in this area, although not directly where the cluster is (attached). Could this be the cause of the thickness result? If I go back and try to repair the defect, will that make the

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Allie Rosen
So if my findings show that each group ages differently, does that mean I can't compare them at all because I can't regress out age? Or is there some way of comparing the groups despite this difference in aging patterns? Thanks again, Allie On Tue, Mar 6, 2012 at 4:44 PM, Douglas N Greve

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Douglas N Greve
It means that any comparison depends on age. Eg, if you compare them at an age where the lines cross, you will see no effect. If you compare them at age=0 (what you were doing before), then you see a big effect. Some statisticians will say that you cannot do the comparison in the presence of

Re: [Freesurfer] Interpreting Results

2012-03-06 Thread Bruce Fischl
do you have a big outlier in the thickness measures? I didn't see one. It seems unlikely that all your subject have a defect in that spot On Tue, 6 Mar 2012, Douglas N Greve wrote: It means that any comparison depends on age. Eg, if you compare them at an age where the lines cross, you will

Re: [Freesurfer] Experiences with GPU-assisted recon-all

2012-03-06 Thread Nick Schmansky
my comments inserted below... On Sat, 2012-03-03 at 20:08 -0500, R Edgar wrote: On Sat, Mar 3, 2012 at 6:57 PM, Abdulkadir Ahmed ahmed.abdulka...@epfl.ch wrote: Freesurfer supports GPU acceleration since version 5.0. To assess the utility of this functionality, particularly the gain in

[Freesurfer] Flags to align per-run motion-corrected functional volumes?

2012-03-06 Thread Alex Kell
Hi Freesurfers, I am using preproc-sess in Freesurfer/Fsfast 5 with per-run motion correction (these subjects have a lot of between-run motion), and I want to analyze the volumes in each subject's individual space (I'd prefer native functional space, but I am happy to do it in each subject's

Re: [Freesurfer] Flags to align per-run motion-corrected functional volumes?

2012-03-06 Thread Douglas N Greve
Hi Alex, analyzing in the anatomical space is going to be very, very costly in terms of space and memory (and I don't really have a way to do it). It is probably better to do it in mni305 space and turn off the masking out of cortex (-no-subcort-mask). You can then run reg-mni305.2mm to create

[Freesurfer] About recon-all

2012-03-06 Thread bowang21
Dear all, I have just ran the command 'recon-all'. recon-all -i 3098704 -s BianYP -sd /home/wb/test/ -all In the parameters,3098704 is a function slice,but this parameter need a anatomical volume.Could it can find the correct ones itself? Whether the anatomical volume is just 3D slice or 2D

Re: [Freesurfer] About recon-all

2012-03-06 Thread Bruce Fischl
you need to give it one slice from the anatomical series. It will find the rest. cheers Bruce On Wed, 7 Mar 2012, bowan...@mail.ustc.edu.cn wrote: Dear all, I have just ran the command 'recon-all'. recon-all -i 3098704 -s BianYP -sd /home/wb/test/ -all In the parameters,3098704 is a

[Freesurfer] poor image quality and re-running freesurfer

2012-03-06 Thread Christine Smith
Hello, I have a couple of subjects with poor quality scans. The grey/white contrast is not so good. I wonder if the newest version of freesurfer might help with the pial and white surfaces. Do I need to make some minor edits to key images/files in order to force freesurfer to take a second shot

Re: [Freesurfer] poor image quality and re-running freesurfer

2012-03-06 Thread Bruce Fischl
Hi Christine it really depends on the details of what went wrong. Can you send snapshots or upload some subjects? cheers Bruce On Tue, 6 Mar 2012, Christine Smith wrote: Hello, I have a couple of subjects with poor quality scans. The grey/white contrast is not so good. I wonder if the