Neural mechanisms for social behavior: roles of neurohypophyseal hormones

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Oxytocin-oxytocin receptor systems play important roles in the control of social behaviors. Oxytocin-synthesizing neurons are localized not only in the hypothalamus but also in the bed nucleus of stria termninalis. However, it is not clear which oxytocin-synthesizing neurons are involved in social behaviors. On the other hand, oxytocin receptors can be activated by oxytocin and vasopressin. We tried to establish a method for destroying local oxytocin- or vasopressin-synthesizing neurons. We successfully destroyed vasopressin-synthesizing neurons in the olfactory bulb.