In contrast, microstructural changes to the uncinate fasciculus have been consistently been linked to conduct disorder and psychopathy. This is consistent with studies of gray matter volume which reported that neural regions linked by the uncinate fasciculus—the orbitofrontal cortex and temporal polar cortex/Brodmann area 38 (also known as the temporal pole/temporal polar cortex/anterior temporal lobe)— have decreased volume in individuals with antisocial personality disorder /psychopathy relative to control. Interestingly, Phineas Gage, a railroad worker who had an iron bar go through his left frontal lobe also sustained damage to the uncinate fasciculus. After the accident, his personality was radically transformed, becoming impulsive, making poor decisions, and failing to follow social norms and conventions.