In a randomized, double-blind, cross-over, placebo controlled design, healthy male volunteers receive intranasal oxytocin or placebo prior to functional magnetic resonance imaging.Subjects will then go through a decision making task, a emotion judgement task and an eight-minute resting-state scan in MRI scanner to investigate whether and how intranasal oxytocin alter the topology of functional brain network in resting-state and multiple tasks in healthy males. State anxiety and mood are measured before and after experiment as covariates to be controlled.
To investigate whether and how intranasal oxytocin of 8IU treatment will alter the topology of functional brain network in resting-state and multiple tasks in healthy males.