Naming scheme and number of 4×4×4 mm voxels in each ROI and brain area.

The given voxel counts are the number of voxels used in the analyses (the number that remain after removing all voxels with zero variance across volumes in any subject), both in each ROI and after removing somatotopic voxels; see text for details. The “Anatomy Toolbox areas” column lists the regions selected to make up each ROI or area using the names in the probabilistic cytoarchitectonic maps from the SPM Anatomy Toolbox [30]. See Figure S1 and Figure S2 for an illustration of these ROIs.