Dear FS Experts,
I have followed the steps for doing a Repeated Measures ANOVA 2x2 in Freesurfer https://surfer.nmr.mgh.harvard.edu/fswiki/RepeatedMeasuresAnova also following the previous post: https://mail.nmr.mgh.harvard.edu/pipermail/freesurfer/2012-October/026287.ht... . https://surfer.nmr.mgh.harvard.edu/fswiki/RepeatedMeasuresAnova
I have already created the FSGD File (2 groups: experimental and control group) and 2 times (pre-treatment and post-treatment) (I send it attached), and specified the contrasts of the model:
Tp1vsTp2Gr.Exp > 0 0 1 0 Tp1vsTp2Gr.Control > 0 0 0 -1 Interaction Effect > 0 0 1 -1
Are these contrasts correct?
I have runned the mri_preproc command, and the "lh.thickness.mgh" file has been created. However, when I run the next step, the smoothing, an error message appears "ERROR: Option lh.thickness.mgh unknown". Am I doing something wrong? The smoothing is an optional step, therefore, I run the mri_glmfit, (I send attached the mri_glmfit.log file), and what appears in the terminal is the file "Results_ANOVA2x2". I this file "Results_ANOVA 2x2" two lines appear: 0 Tp1vsTp2.GrExp 0 0.740532 1 Tp1vsTp2.GrControl 0 0.672022 The first one is telling us that the cortical thickness in the experimental group was Tp1>Tp2, and the same for the control group? Where can I find the interaction results?
Thank you for the help,
Maria.