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Dear Freesurfer experts,
I’m trying to do a group comparison of cortical mean diffusivity. The study
subjects form 2 groups (demented vs. non-demented). I’ve run recon-all and
dt_recon on all of my study subjects. My goal is to create a surface, tha
So the mri_glmfit results are less significant than the QDEC results?
That is a little surprising because the glmfit results will have a
higher DOF. The contrast (gamma.mgh) should be the same. It may be that
your FWHM increased (compare the fwhm.dat files). You can also run the
two group anal
Dear list,
I have a question re group comparisons. I have one group factor with three
levels. I have done group-wise comparisons with these groups using qdec (ie
doing pairwise comparisons, as it only allows group comparisons between two
groups as far as I am aware?) as well as using mri glm fi
Hi All,
I am trying to compare controls to patients. There is an interaction
between group and age (i.e. the aging pattern is different for both
groups). I did an interaction contrast and this was significant in the same
areas that were significant in the original comparison. I can't switch to a
D
The data in aparc.stats contain surface area, gray matter volume, and
average thickness for whole regions, and are not intended for surface
display. If you want to analyze those regional values use
'aparcstats2table' and then import the data into your preferred
statistical package for further ana
Dear All,
I am sorry to post this message again. Since i am not able to find from the
tutorial and archives what i need i am posting it. I want to compare cortical
thickness values in each region from aparc.stats file between control and
patients. I am wondering whether it is possible to compa
Dear All,
I want to perform group comparison of cortical thickness between my patient and
control group. I read qdec tutorial regarding how to do this. I was little bit
puzzled and not able to understand the following. Before creating qdec table of
patient data, fsaverage was suggested to run,
