Psychopathy is linked to abnormalities in brain structure and function from "summary" of Psychopathy by Andrea L. Glenn,Adrian Raine
Research in the field of psychopathy has shown that individuals with this personality disorder exhibit differences in brain structure and function compared to non-psychopathic individuals. These differences have been found through various neuroimaging techniques, such as magnetic resonance imaging (MRI) and functional MRI (fMRI). One of the key brain regions that has been implicated in psychopathy is the amygdala, which plays a crucial role in emotional processing. Studies have consistently shown that individuals with psychopathy have reduced volume and activity in the amygdala compared to non-psychopathic individuals. This could explain their lack of empathy and emotional callousness towards others. In addition to the amygdala, the prefrontal cortex has also been found to be altered in individuals with psychopathy. The prefrontal cortex is involved in decision-making, impulse control, and moral reasoning. Research has shown that psychopathic individuals have structural and functional impairments in this region, which may contribute to their impulsive and antisocial behavior. Furthermore, abnormalities in the connectivity between different brain regions have been observed in individuals with psychopathy. Specifically, disruptions in the communication between the amygdala, prefrontal cortex, and other areas of the brain have been linked to the emotional and behavioral deficits characteristic of psychopathy.- The evidence suggests that psychopathy is not solely a result of environmental factors or upbringing, but is also influenced by biological factors such as brain structure and function. Understanding these neurobiological underpinnings of psychopathy may lead to more effective interventions and treatments for individuals with this personality disorder.
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