You'll have to use fsaverage_sym since you are swapping sides. To do a
"normal" group analysis, you'll have to first run mris_preproc on all
the subjects who have the unaffected on the left, then again for those
on the right. This will give you two files. run
mri_concat lh.fsaverage_sym.mgz rh.f
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I have a group of stroke patients. Most of them have a left-sided stroke,
the others right-sided. I would like to swap the affected right hemisphere
with the unaffected left hemisphere in the patients with a right-sided
stroke. I have done that successf
what do you mean "flip" them?
On 11/5/2019 6:10 AM, Jose Graterol wrote:
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I believe I found my problem. I was trying to run the analysis with xhemi.
Therefore it asked for 34 inputs (17subjects * 2 hemispheres). I was doing it
that way because I flipped the
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I believe I found my problem. I was trying to run the analysis with xhemi.
Therefore it asked for 34 inputs (17subjects * 2 hemispheres). I was doing
it that way because I flipped the hemispheres of the right affected stroke
subjects. That was done with
There are not any restrictions, just do the same as you would for a
non-paired analysis. In any event, you are creating a linear model
y = a +b1*x1 + b2*x2 ...
where y is the input (paired diff) and x1, x2, etc, are your factors.
You are the one who knows your data and what models would be approp
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My doubt is, if it is possible to use a FSGD file to add variables to a
--paired-diff analysis. If it is, what would be the right way to format the
FSGD file.
Thanks in advance.
On Wed, Oct 30, 2019 at 3:01 PM Greve, Douglas N.,Ph.D. <
dgr...@mgh.harv
I don't understand. What per hemisphere variable?
On 10/25/2019 3:15 AM, Jose Graterol wrote:
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Thanks for your answer. A follow up question:
How should I then specify the variable's values per hemisphere
while making the FSGD file if I want to add covariates w
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Thanks for your answer. A follow up question:
How should I then specify the variable's values per hemisphere
while making the FSGD file if I want to add covariates when
running mri_glmfit?
Thanks in advance.
On Fri, Oct 25, 2019 at 12:18 AM Greve, Dou
If you are trying to determine whether the hemispheres are different,
then you need to do the subtraction between the hemis (ie, the
--paired-diff). If you want to look at the hemispheres separately, then
don't combine them in a single file
On 10/21/19 4:58 AM, Jose Graterol wrote:
>
>
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Thanks for your answer.
I want to correlate TMS values in 17 stroke patients. Following the
instructions provided to Anders in this link
https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=subject:%22%5C%5BFreesurfer%5C%5D+flipping+s
What are you trying to test? Usually you don't have lh and rh in the same glm
On 10/17/19 7:09 AM, Jose Graterol wrote:
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Dear Freesurfer Community,
I have a question regarding the formatting of the FSGD file while doing an
analysis with Xhemi.
First the --y
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Dear Freesurfer Community,
I have a question regarding the formatting of the FSGD file while doing an
analysis with Xhemi.
First the --y file was created as previously explained in another
discussion (
https://www.mail-archive.com/freesurfer@nmr.mgh.ha
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