Based on the idea that nonverbal and emotional experiences before language acquisition form the core of
oneself, this study investigated the usefulness of art therapy in establishing a self-internal interrelationship.
It did so by activating and re-enacting past experiences through art activities and helping clients find
themselves by establishing a mental process based on an external interrelationship with the therapist. In
order to build a basis for healthy relationships, self-exploration and recovery are most important. Thus, this
study referred to literature to explain how interrelationships have an important impact on forming
self-existence from the viewpoint of attachment and the development of neuroscience. Then, it explained,
based on the interrelationship between neuroscience and art therapy, that art therapy that stimulates and
activates inner and external interrelationships not only reconstructs one’s inner-self but also brings about
change in the relationship with the therapist. Finally, I explained the significance of establishing a mental
process by experiencing the process of mutual relationship with art-client, therapist-client, and
therapist-art-client, and by having a deep encounter with integrated self. Studying these points through a
literature study revealed that the art therapy experience influences brain development and interrelationship,
and has a extensive implications on defining individuals as human beings.