Hello,
1) We have done the manual segmentation of one subcortical structure and we
have observed that when we erase some area, it appears "none" in the "sgmtn
label" from tkmedit window. Is there any problem whit this?
2) When we install the new version o
Kelly,
For your first question, how are you erasing it? The only way to change
the label of a voxel in the segmentation is to call it another label -
there is no real "erase" option as there are with white matter edits.
If you want to change the label of the voxel, you will need to choose
anot
test
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Hello, Freesurfer group,
I need T values instead of F values for a one-sample T test GLM. How can I
convert the values in F.mgh or sig.mgh (for 12 subjects one group no factor) to
T values and overlay them on the surface?
I found the similar questions in the following emails posted on freesu
test
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t = sign(gamma) * sqrt(F)
where gamma is the gamma.mgh volume.
Wang, Xin wrote:
Hello, Freesurfer group,
I need T values instead of F values for a one-sample T test GLM. How
can I convert the values in F.mgh or sig.mgh (for 12 subjects one
group no factor) to T values and overlay them on th
I'm not sure what analysis you're trying to do. bbregister just aligns
the pet to the MR.
doug
Jose Luis Cantero Lorente wrote:
Hi there,
I would like to reduce the bias between FDG uptake and cortical thickness
changes in my dataset. Would it possible to correct partial volume effects
afte
Info on doing the paired t is here:
https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis
Don Hagler wrote:
You could extend the analysis described on that wiki page by
calculating tstats and pvalues (in addition to mean and stdev). Then
you have a paired t-test, whereas mri_glmfit with qd
http://www.fmrib.ox.ac.uk/fslcourse/sanfrancisco2009.html
We are pleased to announce the 2009 FSL & FreeSurfer course in San
Francisco, USA. It will run immediately before the Human Brain Mapping
conference, in the same venue - the San Francisco Marriott.
The intensive course covers both t
Thanks for the info. I am getting an error on the mri_surf2surf step of the
thickdiffmap.sh script. It occurs whether I use subj1, subj2, fsaverage, or
a different person (subj3) in the command below. There was one comment from
Bruce in the archives that says this error will occur if the regis
what do you get if you run mri_info on the sval file?
bell0...@umn.edu wrote:
Thanks for the info. I am getting an error on the mri_surf2surf step
of the thickdiffmap.sh script. It occurs whether I use subj1, subj2,
fsaverage, or a different person (subj3) in the command below. There
was one
what version of freesurfer is being used?
type 'freesurfer --version' and its the last line.
On Mon, 2009-02-23 at 14:08 -0600, bell0...@umn.edu wrote:
> Thanks for the info. I am getting an error on the mri_surf2surf step of the
> thickdiffmap.sh script. It occurs whether I use subj1, subj2,
The machine I am running on has 14 GB of memory, is there a limit on the
size mri_info will read? Also, from "du" it appears to only take up 1.1M. I
am running Freesurfer 4.0 on Centos4.
mri_info
1633_20170_1271/surf/lh.thickness_diff_1633_20170_1271_to_1633_20240_1280.mgh
TAGskip: failed t
Can you update to v4.2.0? I think that TAGskip problem is a bug we
fixed, but I can't find when it was fixed in our ReleaseNotes. Also, I
thick that version of mri_surf2surf had problems writing .mgh files.
Nick
On Mon, 2009-02-23 at 17:11 -0600, bell0...@umn.edu wrote:
> The machine I am runn
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