Brain abnormality found in boys with attention deficit hyperactivity disorder
Brain abnormality found in boys with attention deficit hyperactivity disorder.
Researchers trying to uncover the mechanisms that cause attention deficit hyperactivity disorder and conduct disorder have found an abnormality in the brains of adolescent boys suffering from the conditions, but not where they expected to find it.
Boys with either or both of these disorders exhibited a different pattern of brain activity than normally developing boys when they played a simple game that sometimes gave them a monetary reward for correct answers, according to a new study by a University of Washington research team.
The research focused on two brain areas, the striatum and anterior cingulate cortex. The striatal region is a network of structures in the mid brain that motivates people to engage in pleasurable or rewarding behavior. The anterior cingulate is higher in the brain and normally activates when an expected reward stops. However, this process, called extinction, doesn’t occur, at least as quickly, in boys with attention deficit hyperactivity disorders.