Hello!
Thanks for the answer.
I used the second option and ran 5000 permutations. It takes "its time"... I read that it's normal.
Short final question: How many times is it running the permutations? I saw that it finished with the first one, gave the first results and started a second round. Is it normal?
So far I haven't found any exact information about it in the previous questions from the mailing list.
Thanks a lot again!
Yacila
Sorry! 40 rows and 21 columns
Yacila
Von: FSL - FMRIB's Software Library [mailto:[log in to unmask]] Im Auftrag von Deza Araujo, Yacila Isabela
Gesendet: Friday, October 17, 2014 7:14 PM
An: [log in to unmask]
Betreff: [FSL] Randomise using GLM
Dear FSL experts,
I am trying to run dual regression as the last step of my resting state analysis in a sample of 20 subjects with two sessions each one (drug and placebo). I considered a paired T test (same group) and followed the instructions of the GLM for such test. The question is: Should I run the dual regression with my GLM.mat GLM.con or just -1 instead?
I tried to use my design so far and I got the error “number of rows in design matrix doesn´t match number of time points”. I have 40 rows (one for each subject condition) and 21 rows (one for modeling the possible group interaction and the rest for every subject).
What is the correct design that I should use with my sample then?
Many thanks for your help!
--
Yacila Deza Araujo, M.Sc. Neuropsych.
PhD Student
Technische Universität Dresden
Faculty of Medicine Carl Gustav Carus
Department of Psychiatry & Psychotherapy
Section of Systems Neuroscience