Re: [Freesurfer] Longitudinal Analysis for functional connectivity data?

2019-11-06 Thread Barbour, Tracy,M.D.
, but there is not a longitudinal functional analysis per se. On 11/5/2019 2:15 PM, Barbour, Tracy,M.D. wrote: Hello Freesurfer experts! I see that there is a longitudinal processing pipeline for volume/cortical thickness. I was wondering if the same pipleline could be used for resting state functional

[Freesurfer] Longitudinal Analysis for functional connectivity data?

2019-11-05 Thread Barbour, Tracy,M.D.
Hello Freesurfer experts! I see that there is a longitudinal processing pipeline for volume/cortical thickness. I was wondering if the same pipleline could be used for resting state functional connectivity based analysis? Best, Tracy ___ Freesurfer

[Freesurfer] Converting ROIs from MNI152 space to MNI305

2019-10-21 Thread Barbour, Tracy,M.D.
Hello experts, I am trying to convert insula ROIs that are in MNI 152 2 mm space to MNI305 space. I will eventually this ROI for connectivity analysis. I ran mri_vol2vol: mri_vol2vol --mov $FREESURFER_HOME/subjects/fsaverage/mri/orig.mgz --targ

[Freesurfer] fspalm error

2019-09-09 Thread Barbour, Tracy,M.D.
Hello Freesurfer community! I am trying to run fspalm on surface based data. I have installed PALM, fspalm, mri_surfcluster, and mri_volcluster. This is my fspalm command: fspalm --glmdir TEPSC.glmdir --cft 1.3 --twotail --name palm-twotail-1.3 --iters 1000 --2spaces --cwp .05 When I run the

Re: [Freesurfer] cluster info

2015-09-08 Thread Barbour, Tracy,M.D.
To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] cluster info Yes, the fraction of the ROI the cluster is covering, not the reverse, so sum > 1 is ok. Eg, if cluster covers all of hippo and amyg, then both would be 1 and would sum to 2. On 9/2/15 7:48 PM, Barbour, Tracy,M.D. wr

[Freesurfer] cluster info

2015-09-02 Thread Barbour, Tracy,M.D.
Hello, I have a large cluster in my group volume map (sig.mgh). I would like to know what percentage of this cluster is in amygdala, hippocampus, etc. Is there a command I could run that would give me that information? Thank you in advance. Tracy

Re: [Freesurfer] cluster info

2015-09-02 Thread Barbour, Tracy,M.D.
, --default-ctab, and your binarized cluster as input. The "mean" column will then be the fraction of the cluster in the ROI. Also, if the sig.mgh is 2mm in fsaverage space, then make sure to use the aseg from the mri.2mm folder On 9/2/15 6:06 PM, Barbour, Tracy,M.D. wrote: Hello, I ha

Re: [Freesurfer] bad registration using mri_vol2vol

2015-07-26 Thread Barbour, Tracy,M.D.
PM, Barbour, Tracy,M.D. wrote: Thank you Doug I tried the way you suggested and the registration actually looks worse. I also tried: mri_label2vol --subject fsaverage --label /autofs/cluster/maury/users/gcoombs/College_Risk/SUBJECTS_DIR_FS53/fsaverage_copy/label/$label.label --o

Re: [Freesurfer] bad registration using mri_vol2vol

2015-07-23 Thread Barbour, Tracy,M.D.
lh.amyg.faceaw_func.anatconstr.p05.5.3CRFH.n70.mgz come from? It must be in the space of $SUBJECTS_DIR/fsaverage/mri/orig.mgz for that transform to work On 07/17/2015 02:43 PM, Barbour, Tracy,M.D. wrote: Hello, I'm trying to convert an ROI mask I created in MNI305 space to MNI152. After running

[Freesurfer] mri_label2vol change to MNI 152

2015-07-20 Thread Barbour, Tracy,M.D.
Hi Freesurfer listserve, I hope you are well. I emailed the freesurfer listserve also but got no response. I am trying to take an functional ROI that is anatomically constrined that I created using tkmedit and transform it to MNI152 space. I saved it as $label.label. Then did this command:

[Freesurfer] bad registration using mri_vol2vol

2015-07-17 Thread Barbour, Tracy,M.D.
Hello, I'm trying to convert an ROI mask I created in MNI305 space to MNI152. After running MRI_vol2vol the registration looks off (too anterior). Here are my commands: mri_convert -ot nii lh.amyg.faceaw_func.anatconstr.p05.5.3CRFH.n70.mgz lh.amyg.faceaw_func.anatconstr.p05.5.3CRFH.n70.nii

Re: [Freesurfer] functional connectivity maps (correlation and z maps)

2015-03-27 Thread Barbour, Tracy,M.D.
:21 AM, Barbour, Tracy,M.D. wrote: Thanks Doug, Hi, I am wondering if you would give some input on this: When we run the buckner scripts for functional connectivity analysis, those scripts: 1. Obtain correlation maps of individual subjects, and convert them to individual subject z-maps

Re: [Freesurfer] functional connectivity maps (correlation and z maps)

2015-03-27 Thread Barbour, Tracy,M.D.
). doug On 03/27/2015 01:53 PM, Barbour, Tracy,M.D. wrote: Thanks! Would you please explain why you think ces is the better map (vs z or correlation coefficient)? Thank you Tracy From: freesurfer-boun...@nmr.mgh.harvard.edu [freesurfer-boun

Re: [Freesurfer] functional connectivity maps (correlation and z maps)

2015-03-26 Thread Barbour, Tracy,M.D.
) matlab sig = MRIread('sig.mgh'); p = (10.^-abs(sig.vol))/2; z = sig; z.vol = sign(sig.vol).*fast_p2z(p); MRIwrite(z,'z.mgh') On 03/25/2015 10:26 AM, Barbour, Tracy,M.D. wrote: Hello, I am doing a functional connectivity analysis. I want to make individual pearson correlation maps for each

[Freesurfer] smoothing for mri_glmfit

2015-03-26 Thread Barbour, Tracy,M.D.
When doing connectivity based within group analysis using mri_glmfit. If I already smoothed the data in the first level analysis do I need to again smooth using the --fwhm command? If so, why? Tracy ___ Freesurfer mailing list

[Freesurfer] functional connectivity maps (correlation and z maps)

2015-03-25 Thread Barbour, Tracy,M.D.
Hello, I am doing a functional connectivity analysis. I want to make individual pearson correlation maps for each subject (correlation between the seed region and all other voxels in the brain) and then convert them to a map of z-scores using a Fisher's z transformation. I want to then get an

[Freesurfer] fcMRI whole brain regression

2015-03-22 Thread Barbour, Tracy,M.D.
Hello, I am doing functional connectivity analysis using the FsFast functional connectivity commands and would like to know how to do a group level whole brain regression with questionnaire data (such as BDI score). Are there any scripts available for this or do I add a covariate in at some