Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Martin Kavec
Thanks for responce, Dough. I've looked at recon-all as you suggested, and came up with the following commandline: mris_anatomical_stats -mgz -f lh.lgi.stats -b -a ../label/lh.aparc.annot -c ../label/lgi.annot.ctab $SUBJECT lh pial_lgi This, however yields segfault: INFO: assuming MGZ format

Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Marie Schaer
Martin, Try instead the option -t pial_lgi as follows: mris_anatomical_stats -mgz -f lh.lgi.stats -b -a ../label/lh.aparc.annot -c ../label/ lgi.annot.ctab -t pial_lgi $SUBJECT lh Otherwise it will read lh.pial_lgi as a surface file, whereas it is indeed a thickness / curv file Have a

Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Martin Kavec
Thanks a lot help, Marie. Indeed the -t switch worked. Now, the lh.aparc.stats (thickness) and my generated lh.lgi.stats (lGI) differ in the columns 4,5,6, which correspond to GrayVol, AverageThk, and StdevThk. Could you please help me to understand these values? 1. Why is the GM volume diffe

Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Marie Schaer
Martin, As lgi is read like a thickness file, the lgi values in your tabular output replaced the value where you had thickness before. So mean lgi is in column 4 (note that average lgi values per parcell are comprised between 1 and 5 if your lgi computation is ok). Standard deviation for

Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Martin Kavec
Thanks a lot for clarification, Marie. On Friday 09 May 2008 14:37:46 Marie Schaer wrote: > Martin, > > As lgi is read like a thickness file, the lgi values in your tabular > output replaced the value where you had thickness before. So mean lgi > is in column 4 (note that average lgi values per pa

Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Marie Schaer
On my understanding, the GM volume given by mris_anatomical_stats should be the same independently of the -t option (unless you reprocessed the surfaces in between), so that's surprising. Doug, do you have any idea? Marie On 9 mai 08, at 15:12, Martin Kavec wrote: Thanks a lot for clar

Re: [Freesurfer] LGI of annotated cortex

2008-05-09 Thread Michael Harms
Just a thought, but I suspect that the volume is calculated as some product of area * "thickness". Then, with the -t option, what FS is using as thickness is now really the lgi value. So, the "volume" value is really not appropriate in that case. cheers, Mike H. On Fri, 2008-05-09 at 15:28 +

Re: [Freesurfer] Fixing Inaccuracies in White Matter Surfaces

2008-05-09 Thread Bruce Fischl
Hi Pradeep, it's impossible to tell if it's an error from a single slice. Things that look like holes may actually just be sulci if you page through a couple of slices. You should also be looking at the intensity volume (e.g. norm.mgz) not just the wm.mgz. If the surface follows the gray/white

[Freesurfer] unpacksdcmdir issue

2008-05-09 Thread jake
Hello, I am getting an error saying that the path from the findsession command is not found. Here is the bugr information and following is the log from my terminal window; could anyone explain why the directory from findsession is missing? THANKS! FREESURFER_HOME: /usr/local/freesurfer/stable4

Re: [Freesurfer] unpacksdcmdir issue

2008-05-09 Thread Paul Raines
Questions on infrastructure issues at the Martinos Center like disk volumes you should direct to the Martinos IT support group at [EMAIL PROTECTED] I see no problem on striatum right now. It can see /space/archive/160/siemens/TrioTim-35162-20080503-192630-556000 just fine. Looks like you r

[Freesurfer] Optseq2 and 2-way design?

2008-05-09 Thread Elizabeth Reynolds Losin
Hello all, I am new to Optseq2 and I have a question about generating 2-way design orders using the program and about a question about temporal jitter. I am working on a design with 7 conditions. I have run the following design through optseq2 and gotten out reasonable looking orders. --ntp 160

[Freesurfer] mri_mask

2008-05-09 Thread Daniel H Choi
Hi, I have tried applying a binary mask, specifically for STG, in conjunction with the mri_mask command. We applied it to a brainmask volume, but we did not get the result we wanted. The output we recieved was simply the mask that we used. We wish to produce an output that gives the STG volume alo

[Freesurfer] Re: mri_mask

2008-05-09 Thread Daniel H Choi
Please note the command we used: mri_mask brainmask.mgz lh.stg.mask.mgz brainout.mgz and the result we got was: Writing masked volume to brainout.mgz...done. On Fri, May 9, 2008 at 2:39 PM, Daniel H Choi <[EMAIL PROTECTED]> wrote: > Hi, > > I have tried applying a binary mask, specifically for