Hello every one
I want to implement the method described in the paper below on my resting-state fMRI data :
http://www.ncbi.nlm.nih.gov/pubmed/?term=Identifying+the+default+mode+network+structure+using+dynamic+causal
In this paper there is a GLM for resting-state data with a design matrix of 8 box-car functions which are estimations of 8 sin & cos functions.
here is my problem: when I estimate the model there is no active voxel in result.
These are some specifications of my GLM that I'm not sure about their correspondence with paper:
1- Basis Function: hrf (in paper It's mentioned that there is no convolution with hrf and conditions are not convolved. But I don't know how to remove or cancel this part in the batch window of specify 1st-level batch in spm8.)
2- I have not added head motion parameters to the model because I don't know how to do that in the batch window.
can any one help me to find the way to do these 2 jobs?
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