ADHD and hyper activity related to brain development

Researchers analyzed high resolution MRI brain images in 26 preschoolers, 13 presenting with ADHD symptoms and 13 without, and found differences in the caudate nucleus.The caudate nucleus is a small structure in the subcortical region of the brain and is associated with cognitive and motor control. Results showed that children with ADHD symptoms had significantly reduced caudate volumes compared to the children who did not present with ADHD symptoms. Additionally, these caudate volumes were significantly correlated with parent ratings of hyperactive/impulsive symptoms.

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