Hi Conners, dear Alfonso

I just found a post by Alfonso regarding my question.
It is from february 20th, 2017 (citation): "Regarding QA_GCOR that is an automatic Quality Assurance covariate computed during the Denoising step. It represents the average global correlation (GCOR) for each subject and each condition (i.e. the center of the voxel-to-voxel histograms that are displayed in the Denoising tab) which has been proposed/used in several studies as a control covariate when comparing groups of subjects across different sites, or when needing additional control for potential noise/artifactual effects on your connectivity measures."

Thanks a lot, Alfonso, this helped!

Kind regards
Julia