Difficulty in maintaining attention, hyperactivity and impulsiveness in children with attention-deficit hyperactivity disorder (ADHD) may be due to delayed development of five brain regions, proving that it is a brain disorder and not the result of bad parenting, researchers say.
The findings, published in The Lancet Psychiatry, showed that in people with ADHD, the overall brain volume as well as nucleus accumbens, amygdala and hippocampus — brain regions within the basal ganglia that controls emotion, voluntary movement and cognition — remains smaller than those without the disorder.
Previous studies had showed that other brain regions such as caudate and putamen are also smaller in people with ADHD.
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