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Research Shows How Ritalin Affects Brains of Kids With ADHD
Date:5/31/2013

By Barbara Bronson Gray
HealthDay Reporter

FRIDAY, May 31 (HealthDay News) -- Ritalin activates specific areas of the brain in children with attention-deficit/hyperactivity disorder (ADHD), mimicking the brain activity of children without the condition, a new review says.

"This suggests that Ritalin does bring the brain [of a child with ADHD] back to the brain the typically developing kid has," said study author Constance Moore, associate director of the translational center for comparative neuroimaging at the University of Massachusetts Medical School.

Analyzing data from earlier studies that looked at how children's brains were affected by doing certain tasks that are sometimes challenging for kids with ADHD, the researchers found that Ritalin (methylphenidate) was having a visible impact on three areas of the brain known to be associated with ADHD: the cortex, the cerebellum and the basal ganglia.

The study could be helpful in diagnosing and treating children with ADHD, Moore said. "It may be helpful to know that in certain children, Ritalin is having a physiological effect in the areas of the brain involved with attention and impulse control," she said.

The research was published recently in the Harvard Review of Psychiatry.

Nine studies analyzed by the researchers used functional MRI to evaluate brain changes after children had taken a single dose of Ritalin. The children were involved in different types of tasks that tested their ability to focus and inhibit an impulse to act.

For example, to observe the brain's reaction during a test of what is called "inhibitory control," a child was told that every time he saw a zero show up on a screen, he should push the button on the right; every time he saw an X appear, he should push the left button. The children would then be asked to flip their responses, pushing the left button when they saw a zero.

"That's hard to do," Moore sa
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