Final answer:
Phineas Gage suffered damage to his frontal lobe, resulting in changes in his personality and impulse control.
Step-by-step explanation:
Phineas Gage suffered damage to his frontal lobe. This ultimately resulted in changes in his personality and impulse control.
Damage to the frontal lobe of the brain can result in a variety of cognitive, emotional, and behavioral changes, as the frontal lobe plays a crucial role in executive functions and personality. The frontal lobe is responsible for decision-making, reasoning, planning, problem-solving, emotional regulation, and controlling social behavior. Injuries or damage to this area can have profound effects on an individual's daily functioning.