Final answer:
Phineas Gage is credited with providing data about the connections between the frontal lobes and subcortical structures in the brain.
Step-by-step explanation:
Phineas Gage is credited with providing data about the connections between the frontal lobes and subcortical structures in the brain. In 1848, Gage survived a severe brain injury when an iron rod impaled through his prefrontal cortex, causing changes in his personality and behavior. This case study provided valuable insights into the importance of the frontal lobes in emotional regulation and impulse control.