Dear all,

I would like to investigate if my resting state BOLD signal in a certain ROI is correlated with the PET signal in a certain ROI.

For this analysis, I have resting state fMRI data of 20 subjects.

I can add for each ROI the ROI PET values as a second level covariate, but how do I test if these values are correlated with my resting state signal?

Thank you for your help!
June