Brain Blood Flow Differences May Provide Neural Basis for ADHD

Crenezumab Misses Primary Targets in Phase II Alzheimer's Trial
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In a study, hemodynamic differences were seen between kids with and without ADHD when shown facial expressions.

Children with attention-deficit/hyperactivity disorder (ADHD) have difficulty recognizing facial expressions. They identify angry expressions less accurately than typically developing (TD) children, yet little is known about their atypical neural basis for the recognition of facial expressions. 

Here, we used near-infrared spectroscopy to examine the distinctive cerebral hemodynamics of ADHD and TD children while they viewed happy and angry expressions. We measured the hemodynamic responses of 13 ADHD boys and 13 TD boys to happy and angry expressions at their bilateral temporal areas, which are sensitive to face processing.

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