Phineas Gage’s 1848 brain injury became a famous case in the history of neuroscience.
Gage was a railroad construction foreman in Vermont when an iron tamping rod passed through his head during an accidental explosion on September 13, 1848. Remarkably, he survived and remained conscious, though accounts describe major changes in his behavior and personality afterward.
The case became influential because it suggested that particular regions of the frontal lobes contribute to planning, decision-making, and social conduct. It helped challenge the idea that the brain functions as an undifferentiated whole.
Later retellings sometimes exaggerate or simplify Gage’s story, and historians have questioned details in early reports. Modern interpretations rely on historical records, skull measurements, and reconstructed trajectories rather than treating every popular anecdote as certain. Even so, Gage remains one of neuroscience’s best-known historical cases.