Dear Helmut and Guillaume
Thank you very much. I defined my GLM through regressors and added head motion parameters to it, but still my results don't look like the paper (I tried it on 24 subjects but results are far from DMN). Now my GLM is completely similar to the paper, so I think there might be something wrong about my contrast. In paper it's been said that 'a diagonal F-contrast of all the eight regressors' so I defined my f-contrast for 8 regressors and 6 head motion parameters this way:
7/8 -1/8 -1/8 -1/8 -1/8 -1/8 -1/8 -1/8
-1/8 7/8 -1/8 -1/8 -1/8 -1/8 -1/8 -1/8
-1/8 -1/8 7/8 -1/8 -1/8 -1/8 -1/8 -1/8
-1/8 -1/8 -1/8 7/8 -1/8 -1/8 -1/8 -1/8
-1/8 -1/8 -1/8 -1/8 7/8 -1/8 -1/8 -1/8
-1/8 -1/8 -1/8 -1/8 -1/8 7/8 -1/8 -1/8
-1/8 -1/8 -1/8 -1/8 -1/8 -1/8 7/8 -1/8
-1/8 -1/8 -1/8 -1/8 -1/8 -1/8 -1/8 7/8
Is there anything wrong about it? I also tried eye(8)T but still no good results.
Would anyone help me? I need to get some results about GLM analysis similar to this paper:
http://www.ncbi.nlm.nih.gov/pubmed/?term=Identifying+the+default+mode+network+structure+using+dynamic+causal
Thanks
Roohi
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