Abstract
The prefrontal area has been once called “Silent area”. However, in recent years, it has known that there are many cognitive function in the prefrontal area and it plays a very important role in order to make a living in the society for human. The damage of frontal lobe causes aphasia, unilateral spatial neglect, memory disorder, and disturbance of attention. Moreover, an execution functional disorder, social behavior disorders such as disinhibition and a personality change, and apathy are seen. In order to exam the patients with frontal lobe damage, we have to evaluate neuropsychological and psychological function in detail, based on functional anatomy and pathophysiology. The abnormality in the neuropsychological tests for the frontal lobe function does not reflect only the damage of frontal lobe specifically and the abnormal results may also cause from the damage of other part in the brain. To conduct a correct evaluation and diagnosing pathophysiology is the first step for a patient with frontal lobe damage to lead comfortable social life.
