fNIRS Hyperscanning of Right-brain Synchronization between Therapist-client in Sandplay Therapy

This study investigated inter-right brain synchrony between therapist and client in Sandplay therapy, using hyperscanning technique based on functional near-infrared spectroscopy (fNIRS). fNIRS is a non-intrusive method that measures changes oxyhemoglobin the cerebral blood. A total of seven therapist-client pairs-i.e., 14 participants-wore devices their heads engaged two sessions with each session lasting for 30 minutes. The observed synchronization right left prefrontal cortices both therapists clients all pairs, during every session. Interestingly enough, occurred not only while pairs verbal communication about completed sandpicture but also non-verbal process clients' creating sandpictures. outcome hence suggests neurobiological fundamentals therapeutic relationship client, which called resonance, relational mutual regression, alliance, mother-child unity.