Hi Michael,
Thanks for the feedback. I have been studying the website, but still find it very complex.
Would this be a suitable design (I have more subjects, but just to make it easy: 12 subject: 2 groups - 3 session each
group Age session Interaction Mean
Input1 1 1 1 1 0
Input2 1 1 1 1 0
Input3 1 1 -1 -1 0
Input4 1 1 -1 -1 0
Input5 1 1 0 0 0
Input6 1 1 0 0 0
Input7 1 -1 1 -1 0
Input8 1 -1 1 -1 0
Input9 1 -1 -1 1 0
Input10 1 -1 -1 1 0
Input11 1 -1 0 0 0
Input12 1 -1 0 0 0
Contrast F1 F2 F3
C1 0 1 0 0 0 x
C2 0 0 1 0 0 x
C3 0 0 0 1 0 x
C4 0 -1 0 0 0
C5 0 0 -1 0 0
C6 0 0 0 -1 0
I appreciate your feedback on this!
Thanks
Heidi
================================================
Dr. Heidi Jacobs
Postdoc researcher
Faculty of Health, Medicine and Life Sciences
School for Mental Health and Neurosciences
Division Cognitive Neuropsychiatry and Clinical Neurosciences
Alzheimer Center Limburg
[log in to unmask]
www.maastrichtuniversity.nl
www.heidijacobs.nl
Dr. Tanslaan 12, 6229 ET Maastricht
P.O. Box 616, 6200 MD Maastricht, The Netherlands
T +31 43 38 84 090 F +31 43 38 84 092
================================================
________________________________________
Van: FSL - FMRIB's Software Library [[log in to unmask]] namens Harms, Michael [[log in to unmask]]
Verzonden: donderdag 20 juni 2013 17:32
Aan: [log in to unmask]
Onderwerp: Re: [FSL] Overall test for two groups - 3 conditions
No, that design is not correct. See the GLM page on the Wiki.
cheers,
-MH
--
Michael Harms, Ph.D.
-----------------------------------------------------------
Conte Center for the Neuroscience of Mental Disorders
Washington University School of Medicine
Department of Psychiatry, Box 8134
660 South Euclid Ave. Tel: 314-747-6173
St. Louis, MO 63110 Email: [log in to unmask]
On 6/20/13 10:00 AM, "Jacobs H (NP)" <[log in to unmask]>
wrote:
>Dear FSL-developers,
>
>I have fMRI data of 2 groups (each group 20 people) over 3 time points.
>If I want to perform a repeated measures test with a within variable and
>a between-group variable, would the mat and con file be ok?
>(G1_T1 = group 1, time 1). So, I guess I have to do an F-test statistic.
>
>I also want to correct for GM. However, I only have one T1-weighted image
>for person. How can I include grey matter as a covariate (I don't have
>120 files) without harming the model?
>
>Thanks
>Heidi
>
>
>
>
>================================================
>Dr. Heidi Jacobs
>Postdoc researcher
>Faculty of Health, Medicine and Life Sciences
>School for Mental Health and Neurosciences
>Division Cognitive Neuropsychiatry and Clinical Neurosciences
>Alzheimer Center Limburg
>[log in to unmask]
>www.maastrichtuniversity.nl
>www.heidijacobs.nl
>
>Dr. Tanslaan 12, 6229 ET Maastricht
>P.O. Box 616, 6200 MD Maastricht, The Netherlands
>T +31 43 38 84 090 F +31 43 38 84 092
>================================================
________________________________
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