When an iron rod went through Phebe A. Gage's left prefrontal cerebral cortex in 1848, he suffered a brain injury. As a result, Gage's personality, behavior, and psychological state changed.
Gage survived his accident for twelve years. But in the end, the harm to his brain had probably killed him. On May 21, 1860, he passed away from an epileptic fit that was almost certainly brought on by his brain injury.
Similar to this, the majority of popular tales of Phineas Gage state that his injuries caused him to experience significant personality changes. It's common knowledge that he permanently lost his inhibitions and began acting badly in social settings.
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