Extra ROI variable

[mnarayan]

I downloaded the CPAC preprocessed ABIDE data using the dosenbach atlas [1]. Although the atlas consists of 160 ROIs, the datasets contain 161 variables. Some documentation that explains the extra variable would be helpful. I suspect the 161st column is the global mean signal. Would be great if someone can confirm this.

[1] https://s3.amazonaws.com/fcp-indi/data/Projects/ABIDE_Initiative/Outputs/cpac/nofilt_noglobal/rois_dosenbach160/UCLA_1_0051201_rois_dosenbach160.1D