[Freesurfer] glmfit and glmfit-sim after built monte-carlo simulation (superiortemporal label)

2016-04-12 Thread Pedro Rosa
Dear list, I want to limit my vertex-wise group analysis to a smaller spatial region, then I ran my own Monte-Carlo simulation on fsaverage for the superior temporal gyrus: mri_mcsim --o lh/superiortemporal --base mc-z --surface /fsaverage lh --nreps 1 --label superiortemporal After 36 hours

[Freesurfer] TRACULA

2016-04-12 Thread Jasmin Alves
So I have specified where the DTI file is. I am not sure why Tracula cannot open it. Users/jasminalves/Desktop/data/DTI/40/DTI.nii.gz this is where the the dti file is. On Tue, Apr 12, 2016 at 11:45 AM, Alan Francis > wrote: > Hi Jasmin - > > When replying please cc the FS group so that they may

Re: [Freesurfer] missing baseline in longitudinal analysis

2016-04-12 Thread Martin Reuter
It does not compute this. Often people use time-from-baseline for their analysis and control for age (@ baseline). Best Martin On Apr 12, 2016 6:23 PM, Mihaela Stefan wrote:Thanks Martin! Related to the longitudinal analysis, should we use the demeaned age at baseline or the LME package automatic

Re: [Freesurfer] mri_surfcluster issues

2016-04-12 Thread Douglas N Greve
On 04/11/2016 04:46 PM, Antonin Skoch wrote: > Dear FreeSurfer experts, > > I am using mri_surfcluster to compare results from PALM and FreeSurfer > cluster extent inference. > > I came across several issues in mri_surfcluster I cannot cope with. > > 1. > I observed that --mask option in mri_sur

Re: [Freesurfer] missing baseline in longitudinal analysis

2016-04-12 Thread Mihaela Stefan
Thanks Martin! Related to the longitudinal analysis, should we use the demeaned age at baseline or the LME package automatically computes this? Thanks again! Mihaela On Apr 12, 2016 5:39 PM, "Martin Reuter" wrote: > Hi Michael, > the longitudinal image processing pipeline does not care which o

Re: [Freesurfer] Preprocessing task data with multiple B0-corrected runs

2016-04-12 Thread Douglas N Greve
Can you tell me more about your design? Does each run have a separate task? Do you want to test across tasks? On 04/12/2016 11:53 AM, Shea, Conor wrote: > Thanks so much. So, then, how does the Group Level Analysis work? How do I > concatenate the runs together again, now that we've separated

Re: [Freesurfer] FSFAST with reoriented reconstruction

2016-04-12 Thread Douglas N Greve
In general, FreeSurfer does not care what orientation your images are in as long as the geometry in the header file is correct. If you re-oriented them for SPM and you are confident that the geometry info is still correct (eg, no left-right flips) and you did not change the scale of the images

Re: [Freesurfer] Group level analysis: Specifying contrasts

2016-04-12 Thread Douglas N Greve
On 04/12/2016 04:16 PM, Afzal, Afsana wrote: > The source data is from a gambling task that has multiple levels of risk and > reward. The offset refers to the risk level and the slope refers to the > monetary reward for that particular risk level. > > We were doing some parametric modulation in

Re: [Freesurfer] REPOST: Monte Carlo correction in QDEC

2016-04-12 Thread Douglas N Greve
sorry, I could have sworn that I answered this one On 04/12/2016 08:57 AM, Clara Kühn wrote: > Dear FreeSurfer experts, > > for the analysis in QDEC I created my own Monte Carlo correction. > My questions relate to the threshold option. > > 1. Would I use neg if I have mostly blue clusters in the

Re: [Freesurfer] missing baseline in longitudinal analysis

2016-04-12 Thread Martin Reuter
Hi Michael, the longitudinal  image processing pipeline does not care which one is baseline and which are follow ups. It only cares what images belong to the same subject. So, yes you can process this one with only two tone points instead of three. Best Martin On Apr 12, 2016 5:09 PM, Mihaela Stefa

[Freesurfer] missing baseline in longitudinal analysis

2016-04-12 Thread Mihaela Stefan
Hello FreeSurfers, We are conducting a longitudinal analysis and we have a subject who is missing the structural at baseline (it has fMRI data though). That subject returned for the 1st and the 2nd follow-up. Can we process the longitudinal pipeline the usual way and account for the missing baseli

Re: [Freesurfer] Group level analysis: Specifying contrasts

2016-04-12 Thread Afzal, Afsana
The source data is from a gambling task that has multiple levels of risk and reward. The offset refers to the risk level and the slope refers to the monetary reward for that particular risk level. We were doing some parametric modulation in the first level analysis. For the second levels, curr

Re: [Freesurfer] TRACULA

2016-04-12 Thread Alan Francis
Hi Jasmin - When replying please cc the FS group so that they may weigh in on the situation. Looking at the log, they key problem appears to be this: niiRead(): error opening file Users/jasminalves/Desktop/data/DTI/40/DTI.nii.gz Tracula is not able to open your DTI.nii.gz Please check this file

Re: [Freesurfer] Preprocessing task data with multiple B0-corrected runs

2016-04-12 Thread Shea, Conor
Thanks so much. So, then, how does the Group Level Analysis work? How do I concatenate the runs together again, now that we've separated them into different tasks? Conor -Original Message- From: freesurfer-boun...@nmr.mgh.harvard.edu [mailto:freesurfer-boun...@nmr.mgh.harvard.edu] On

Re: [Freesurfer] Bad Segmentation in Left Thalamus

2016-04-12 Thread Bruce Fischl
Hi Grant That's pretty surprising. If you tar and gzip that whole subject's dir I will take a look Cheers Bruce > On Apr 12, 2016, at 11:03 AM, Grant O'Brien wrote: > > Hello, > I’m an undergraduate at Duke University working on a study of pediatric > structural imaging. We’ve recently come a

[Freesurfer] FSFAST with reoriented reconstruction

2016-04-12 Thread Julio Alberto González Torre
Hi Freesurfer users. I performed the recomended reconstruction of 82 subjects with Freesurfer. The images used for this reconstruction were previously reoriented to AC-PC position, because they were previously used for SPM purposes. Now I'm trying to perform the FSFAST workflow, and I had to unp

Re: [Freesurfer] TRACULA

2016-04-12 Thread Alan Francis
Hi Jasmin - In your dmrirc file , the dcmlist refers to the dicom list. You have put the BVEC/BVAL files there. That is not correct. You need to place the actual pathway to your niftis in this position. set subjlist = (40 39 36) # Input diffusion DICOMs (file names relative to dcmroot) # If orig

[Freesurfer] REPOST: Monte Carlo correction in QDEC

2016-04-12 Thread Clara Kühn
Dear FreeSurfer experts, for the analysis in QDEC I created my own Monte Carlo correction. My questions relate to the threshold option. 1. Would I use neg if I have mostly blue clusters in the QDEC display and pos if I have mostly red clusters? 2. When do I use abs? 3. I compared the neg opti

[Freesurfer] Segmentation of supplemental motor area

2016-04-12 Thread Morten Sejer Hansen
Dear Freesurfer experts, I need to extract the volume of the supplemental motor area (cortical structure) I have used the aparch.stats2table and applied the both the ?h.aparc.stats and the ?h.aparc.a2009s.annot.stats atlas; However, I am having trouble identifying the supplemental motor area. D

Re: [Freesurfer] 3T or nuintensitycor3t

2016-04-12 Thread Kasper Jessen
Hi Lee, To be absolutely sure that i understand it correctly. By adding the -3T flag, it used both the 3T atlas for Talairach alignment and the 3T-specific NU intensity correction parameters. So, all i need to pass in the command line (recon-all) is the -3T flag. I do not need to add additional fl