Brain Abnormality Linked to Hyperactivity Disorder

Brain scans of children with attention deficit hyperactivity disorder show abnormalities in the fiber pathways along which brain signals pass, scientists said on Monday.

The finding indicates the disorder may be more than just a chemical imbalance, they added.

Using an imaging technique called diffusion tensor imaging, researchers found subtle anatomical differences in children diagnosed with ADHD that may affect communication between key areas of the brain — the frontal cortex, basal ganglia, brain stem and cerebellum.

“These areas are involved in the process that regulate attention, impulsive behavior, motor activity, and inhibition — the key symptoms in ADHD children,” said lead researcher Manzar Ashtari, an associate professor of radiology and psychiatry at North Shore-Long Island Jewish Health System in New Hyde Park, New York.

In another study, Ashtari found the brain irregularities diminished in children who had been medicated with stimulant drugs for an average of 2 1/2 years.

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    Last reviewed: By John M. Grohol, Psy.D. on 30 Nov 2004
    Published on PsychCentral.com. All rights reserved.