The Effects of Oxytocin Administration to Patients and Therapists on Physiological Synchronization

Introduction: Oxytocin (OT) is a nine-amino acid neuropeptide, known to have a fundamental role in social communication. In a recent randomized, double-blind, placebo-controlled study carried out in Shalvata Mental Health Center, OT was administrated to patients suffering from severe mental health illness. The results indicated that OT has a clear beneficial effect on therapeutic outcomes. However, to our knowledge, the effect of OT administration to both patients and therapists on the therapeutic process was never tested. Substance administration to caregivers is therefore possible, and could, in some cases, provide further knowledge about the caregiving dynamics. Since we know the therapist's characteristics effect the therapeutic alliance and that OT is associated with the therapeutic alliance, patient-therapist bond, and therapy outcome, we are led to ask if OT administration to patients and therapists could allow for a deeper understanding of OT's effects on the therapeutic process. Another variable found to be associated with the therapeutic process is Physiological Synchronization. Physiological Synchronization (PS) is a primarily interpersonal phenomenon which includes coordination of physiological signals between two or more interacting individuals. Despite the rising number of studies examining PS, its physiological and psychological mechanisms are yet to be fully understood. Based on literature indicating associations between OT and PS, and associations each of them has with the therapeutic process and its facilitators, in this study we wish to examine the influence of OT on PS through intranasal OT administration to patients alone and to patients and therapists together. Research Hypotheses: 1. Patients receiving OT will demonstrate higher levels of PS during the measured session compared to patients receiving placebo. 2. Patients receiving OT will report higher levels of perceived therapist empathy as compared to patients receiving placebo. 3. These