emotional shiftFor example, you may get from your parents a propensity to be hot-headed and emotion- wise volatile, rather than borderline personality disorder itself. Secondly, a good number the exact same twins grow up in the identical household and in the same relatives environment, so they will share many environmental elements. Neurotransmitters implicated in borderline personality disorder: It is thought that lots of people with borderline personality disorder often have distorted operation of a neurotransmitter referred to serotonin in their brain. Altered serotonin activity in the brain has been associated with depression, aggression and difficulty in controlling damaging cravings. There is also some limited evidence that some people with borderline personality disorder also have altered performance of two other neurotransmitters, referred to dopamine and noradrenaline, that could be connected with emotional volatility. Neurobiology of the borderline personality disorder: Scientists have used MRI scans to learn the brains of person with borderline personality disorder. MRI scans use strong magnetic fields and radio waves to generate a comprehensive image of the inside of the body. The scans unearthed that in a lot of people with borderline personality disorder, three regions of the brain were either reduced than expected or had atypical degrees of activity. These parts were: 1. the amygdala: which plays an important role in controlling feelings, in particular the more "negative" emotions, for example horror, aggression and worry, 2. the hippocampus: which allows control conduct and self-manage, 3.