Researchers found a gene linking intelligence and intensity of the so-called " gray matter " in the brain , and say that this discovery may help scientists understand how and why some people facing difficulties in learning.
The international team analyzed DNA samples and X-rays of the brain for more than 1,500 healthy people aged 14 years , and they give them a series of tests to determine their intelligence verbal and non-verbal .
The researchers examined the outer shell of the brain , also known as " gray matter " , which plays a key role in memory , attention, perception , thinking, language and consciousness.
The researchers then after analyzing more than 54 thousand variable Jenny , may have a role in the development of the brain , and found that teens who have a variable Jenny particular have an outer cortex of the brain thinner in the left half of their brains , and they are the people who were their scores on tests of intellectual ability less .
Said Sylvain Desrvier , who led the study at King's College Institute of Psychiatry in London , said that " we set the variable gene related to how neurons connect ."
She added: "This may help us understand what is happening at the level of nerve cell in certain forms of intellectual disability , which undermines to some extent the ability of neurons to communicate effectively ."
But stressed Desrvier that their findings do not constitute the discovery of " Jane 's Intelligence " , saying : "It is important to point out that intelligence is influenced by genetic factors and environmental many , this gene we set does not explain only a fraction of the differences in intellectual ability ."
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