Brain scans reveal a shocking difference between psychopaths and other people
Scientists have uncovered a striking brain difference linked to psychopathy: people with psychopathic traits were found to have a striatum — a brain region tied to reward, motivation, and decision-making — that was about 10% larger on average than those without such traits. Using MRI scans and psychological assessments on 120 participants, researchers connected this enlarged brain region to thrill-seeking, impulsive behavior, and a stronger drive for stimulation.
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Group A Streptococcus (strep throat), share molecular structures similar to proteins found in human brain cells. Following an infection, the body's immune system creates antibodies that mistakenly target the basal ganglia (which includes the striatum).
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