Smart 'other development' human brain

A study in Nature's scientific journal says people are smarter than others because they have more gray matter, but because part of their brains develop differently than ordinary people.

The cortex develops differently when we are young ( Photo: BBC ) The US National Mental Health Research Institute uses scanners to understand cortical development, which controls thinking. of humans, out of 307 children.

They found that the smarter children often had thinner cortex when they were about 7 years old, but then, the cortex thickened rapidly when they were 12 years old.

Normal children initially have thick cortex, and it is thickest at 8 years of age.

In both cases, the cortex is usually thinned after it reaches the thickest point, but in children with normal IQ, IQ, this develops very slowly due to their cortex. thicker at a slightly earlier age.

Researchers believe that because the cortex thickens for a long time in smart children, it allows the brain to develop faster thinking speeds.

After that, the cortex thinning rapidly may be because the brain removes unnecessary neurological connections when the brain streamlines activities.

A researcher, Dr. Elias Zerhouni, commented: "Studies show us that people with higher IQs don't usually have bigger brains."

" Thanks to brain imaging technology, we now find that the difference may be due to brain development ."