: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] mri_glmfit error: MatrixResidualForming(): X is not
invertable
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My guess is that the variable (G_cingul vol) should be normalized (remove the
mean and divide by the stddev).
On 9/6/2022 5:44 PM, Piot
My guess is that the variable (G_cingul vol) should be normalized
(remove the mean and divide by the stddev).
On 9/6/2022 5:44 PM, Piot, Alex wrote:
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Hello Freesurfer experts,
I am trying to perform a GLM, using the volume of a brain region as a
covariate
External Email - Use Caution
Hello Freesurfer experts,
I am trying to perform a GLM, using the volume of a brain region as a
covariate. I am doing a two-group, one covariate design. I originally tried to
use QDEC to facilitate the process and received an error message that the
