2019 年 73 巻 2 号 p. 57-81
The mental capacity of mentalizing other’s mind and self-awareness that senses self mind introspectively is a key mental ability of the social brain to understand others and to know themselves. By extracting these mental abilities with wellestablished social brain tasks, we can observe the brain’s internal representation of the self and others in the social brain region centered on medial prefrontal cortex (MPFC) by using functional magnetic resonance imaging (fMRI). In addition, it has been found that disorders in boundary formation between self and others produce accompanying various social adaptive disorders. Modeling brain imaging data by brain science of the prefrontal lobe with graph theory of informatics, connecting it widely to new developments in humanities and social sciences research, and promoting the integrated social brain science becomes critical social demands it can be said that it is in progress.