comparing brain behavioral systems, defense mechanisms, and cognitive-emotional regulation in patients with type i bipolar disorder and normal individuals

Introduction: the present study compared the activity of brain behavioral brain systems, defense mechanisms, and cognitive-emotional regulation in patients with type i bipolar disorder and normal individuals. materials and methods: the statistical population of this causal-comparative research included type i bipolar patients in euthymic phase referred to ibn-e-sina psychiatric hospital in mashhad- iran, in january to october 2020. thirty patients with type i bipolar disorder and thirty normal individuals were selected by the purposeful sampling method. the research instrument included brain behavioral activation and inhibition activity system questionnaire (bas/bis), defense styles questionnaire (dsq-40), and cognitive-emotional regulation questionnaire (cerq-p). the data analyzed through descriptive statistics and multivariate analysis of variance. results: the results showed that bas/bis, defense mechanisms, and cognitive-emotional regulation are different significantly in bipolar i patients and normal individuals (p< 0.05). bipolar i patients had higher levels of bas/bis, immature defense mechanisms, psychosis, boredom with others, rumination, and catastrophe. the level of bas/bis, mature defense mechanism, acceptance, positive refocus, and positive refocusing on planning and reassessment was higher in normal individuals than in patients with type i bipolar disorder. conclusion: the results showed that type i bipolar disorder is correlated with the components of all three variables of brain activation and brain inhibition systems, defense mechanisms, and cognitive-emotional regulation.