1. A system that identifies a focal area of abnormal brain interactions in a subject, the system comprising: a non-transitory memory storing computer-executable instructions; and a processor that executes the computer-executable instructions to at least: receive time series data from a plurality of regions in a brain of the subject recorded during a resting period; determine an information inflow associated with each of the plurality of regions based on the time series data; and identify the focal area of the abnormal brain interactions as one of the plurality of regions having a maximum information inflow.