Hi,
I have new user questions for functional connectivity analysis in SPM
I have time course (extracted from chosen VOIs), and I want to calculate correlation values between this area and each one of the brain voxels (I have rest fMRI data, i.e I'm only interesting in the functional connectivity and there is no model existent)
After preprocessing I chose:
Specific first level> Regressors= My VOI time course
Next, after data estimation in the result section I choose: Type=t-contrast ; Contrast=1
My questions are:
1. Is this right way to analyze my data?
2. This results with the following output files:
beta_0001- if this in the image of estimated regression coefficients,
why the highest value (indeed located on my seed region) = 0.03 and not ~1?
(I also got beta_0002, con_0001, mask, ResMS, RPV and spmT_0001 images.)
If beta_0001 is not the most informative map, in which map should I look in order to see the calculated correlation value between my VOI and each one of the brain voxels and what it's scale stands for?
Many thanks
Moran
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