I don't think you have this set up properly for the RM ANOVA. You'd have
to have a different class for each input. It looks like you've partially
configured for the paired analysis
https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis, which is
probably the easier thing to do, but somthing looks wrong in your FSGD
file. If using the paired analysis, then you should have subtracted time
point 1 from 2 (or the other way around), so you have one map per
subject (not two, as in the RM ANOVA), and so one line for each subject
in the FSGD. If you have two classes (Lang and Control), then you are in
the Two Group, Zero covariates situation here
https://surfer.nmr.mgh.harvard.edu/fswiki/Fsgdf2G0V
On 4/14/2025 8:32 AM, Emilia Rydén wrote:
External Email - Use Caution
Hi everyone,
I’m new to FreeSurfer and currently working on a group-by-time
analysis. I have two groups (language and control) and two time points
(pre and post). I’m planning to run a repeated measures ANOVA using
the approach described here: *MailScanner has detected a possible
fraud attempt from "secure-web.cisco.com" claiming to be*
https://surfer.nmr.mgh.harvard.edu/fswiki/RepeatedMeasuresAnova
<https://secure-web.cisco.com/17-MXDv-625h05yLHVA36RwisjCP6uV-tVc6FhAka3PqeNpIrJVhokxzKjHAkGt0Dl7h45H6c5dgt-nPARKPDSKbu4k_6Gm2KGe9q1BTKjDfVEHmhLTKcb8SFw7Y-oZpu0xBzGyEmIMGYLmPoHbPOZQa5xBaRNpOMVLIX0m0pm5hJZuxJH5AxorOVpLmFhNqCasfmlr5MW0KcOwxqOCPHjicK0XM-HVRD5c5R_MtCD1vB-8FzydEtCIrToCXLY5iz-vCAG9E2VQeV471UlYp4jVn6na7hhEOqh_sOdjl8HW4E-CL6W1T-DexPBp9SVdGfo_gp_oGBAZvwVUorV1WJMw/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FRepeatedMeasuresAnova>.
I’ve attached my initial attempt at an FSDG file. I would greatly
appreciate any guidance on how to correctly model this, particularly
when it comes to setting up the contrast files.
Thank you in advance for your help!
Best regards,
Emilia
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