[Freesurfer] GLM twin design

External Email - Use Caution Dear FS List, I wanted to check if my GLM design for a surface based analysis is sound. I am new to FS so please don’t skip over details. I have 3 groups of monozygotic twins: low-risk, high-risk, ill. Twin pairs may be present in the same group (e.g

[Freesurfer] Accounting for family relation in FS

External Email - Use Caution Dear FS List, (apologies for reposting under different title) I wanted to check if my GLM design for a surface based analysis is sound. I am new to FS so please don’t skip over details. I have 3 groups of monozygotic twins: low-risk, high-risk, ill.

[Freesurfer] Issue with extracted thickness value from significant cluster or peak vertex

External Email - Use Caution Hi, I am using FS 7.1.0. After running the surface thickness GLM analysis I get one cluster after correction for multiple comparison showing a significant group difference. I want to make a plot illustrating this group difference. However, when using th

[Freesurfer] Issue with extracted thickness value from significant cluster or peak vertex

External Email - Use Caution Sorry I had to re-posted this since since it quickly moved down the list without an answer Julian Macoveanu Thu, 22 Oct 2020 00:59:50 -0700 Hi, I am using FS 7.1.0. After running the surface thickness GLM analysis I get one cluster after correction

[Freesurfer] Subject cluster mean values from ocn.dat do not show the expected group difference

External Email - Use Caution Hi, I am using FS 7.1.0. After running the surface thickness GLM analysis I get one cluster after correction for multiple comparison showing a significant group difference. I want to make a plot illustrating this group difference. However, when using th

[Freesurfer] Linear mixed model for longitudinal data

External Email - Use Caution Dear all, This is my first attempt to analyze longitudinal structural data with freesurfer, and I just do my best to follow the tutorial. I have some things not clear, so any help would be appreciated. We have a longitudinal study design with 2 groups

[Freesurfer] Linear mixed model for longitudinal data

External Email - Use Caution (Apologies for reposting due to lack of answer) Dear all, This is my first attempt to analyze longitudinal structural data with freesurfer, and I just do my best to follow the tutorial. I have some things not clear, so any help would be appreciated.

[Freesurfer] Linear mixed model for longitudinal data

External Email - Use Caution Dear Kersten, Thank you for your answer, I have some follow-up questions to the first two points before I can move on. 1) Regarding family-relation, since three random effects may not work, did you mean that a simpler model with 2 random effects (inte

[Freesurfer] Visualizing and interpreting vertex-wise GLM analysis

External Email - Use Caution Dear Freesurfers, I have a simple design with patients and controls and would like to find regions showing group differences in cortical volume and thickness. I also remove the effect of age, sex and ICV. Running the GLM group analysis by the book I ge

[Freesurfer] Visualizing and interpreting vertex-wise GLM analysis

External Email - Use Caution Dear Freesurfers, I have a simple design with patients and controls and would like to find regions showing group differences in cortical volume and thickness. I also remove the effect of age, sex and ICV. Running the GLM group analysis by the book I

[Freesurfer] How to interpret vertex-wise findings?

External Email - Use Caution Dear Freesurfers, I have a simple design with patients and controls and would like to find regions showing group differences in cortical volume and thickness. I also remove the effect of age, sex and ICV. Running the GLM group analysis by the book I