localisation of function

• brain scan evidence for localisation of brain functions - peterson used brain scans to demonstrate how wernicke's area was active during a listening task and Broca's area was active during a reading task, suggesting that areas of the brain have different functions.
• case study - Phineas Gage's frontal lobe was impaled with a pole. the damage to his brain left a mark on his personality from calm to quick tempered. suggests that the frontal lobe may be responsible for regulating mood. however it is difficult to draw general conclusions from the case study as it is one unique event that can not be generalised to daily life