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Not sure. My guess is that it is because TicFemale only has 5 subjects
and you are trying to compute 4 parameters from them, leaving only 1
DOF. If you want more help, please send the design matrix (Xg.dat) --
you sent the contrast matrix.
On 7/5/2
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I attached fsgd, matrix and error captured file
I don't know why this error occurs.
Tic_structure.fsgd
Description: Binary data
lh-Avg-thickness-age-Cor.mtx
Description: Binary data
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On 10/22/2013 01:19 PM, Laura M. Tully wrote:
> Thanks for the suggestions Doug, I have a few clarifying questions
> below, to make sure I understand everything.
>
>
> On Tue, Oct 22, 2013 at 8:02 AM, Douglas N Greve
> mailto:gr...@nmr.mgh.harvard.edu>> wrote:
>
>
> The duration of illnessis
Thanks for the suggestions Doug, I have a few clarifying questions below,
to make sure I understand everything.
On Tue, Oct 22, 2013 at 8:02 AM, Douglas N Greve
wrote:
>
> The duration of illnessis always 0 for your healthy controls(which is
> obviously reasonable). The problem is that mri_glmfi
The duration of illnessis always 0 for your healthy controls(which is
obviously reasonable). The problem is that mri_glmfit is creating a
regressor of all 0s to model this duration and this is causing the
ill-conditionedness. There are several things you can do:
1. Create your own design matri
Hello freesurfers,
I'm trying to run mri_glmfit between groups analysis (patients vs.
controls) with gender, age, medication (continuous), and duration of
illness as covariates. The problem is, only the patients have medication
and duration of illness values - by virtue of being control participan
