found a lesion located in the left temporal region. This area became known as Wernicke's area. Wernicke later hypothesized the relationship between Wernicke's area and Broca's area, which was proven fact. Epidemiology Head injury is the leading cause of death in many countries. See also Traumatic brain injury Brain damage Concussion Acquired brain injury Neurodegeneration Chronic traumatic encephalopathy References External links Brain Injury (journal) Cochrane Injuries Group: systematic reviews on the prevention, treatment and rehabilitation of traumatic injury First aid advice for head injuries from the British Red Cross Neurotrauma Injuries of head