The “BrainRegions” file contains the regions of the AAL atlas, which are commonly
used for node definition in graph analyses. However, you can substitute these regions
with the nodes you need for you analysis (e.g. task-fMRI derived regions of interest or
any other brain atlas). As GraphVar is not limited to a specific number of nodes you can
define your own brain parcellation scheme. When doing so by creating your own
BrainRegions file, it is important to keep in line with the structure of the original sheets
as GraphVar will refer to it (also refer to the “ROI_template” folder).