Health Matters: Brain Studies Linked to Intelligence and ADHD

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Let’s take a look at two different studies both focusing on the brain.

First, human intelligence may have to do with the strength of connections between parts of the brain.

Washington University in Saint Louis Researchers showed the connectivity with a particular part of the prefrontal cortex can predict how intelligent someone is.

They scanned the brains of subjects as they rested. And again as they engaged in mentally challenging tasks.

Study authors say findings suggest part of what it means to be intelligent is having a lateral prefrontal cortex that does its job well.

While the study found an association between the lateral prefrontal cortex connectivity and higher intelligence.

It did not prove this connectivity causes higher intelligence.

Findings appear in the “Journal of Neuroscience.”

Also, researchers uncover more evidence that certain types of brain development delays may be related to an increased risk for Attention Deficit Hyperactivity Disorder (ADHD).

A study found development of the cortical surface, which covers the cerebral cortex, was slower in children with ADHD.

This complements previous research that found thickening of the cerebral cortex also is delayed in the brains of kids with ADHD.

Researchers say at this point the findings have no clinical implications.

They hope one day their data helps point to genes that control the timing of brain development.

Findings appear in the journal “Biological Psychiatry.”