How the brain wires itself and what happens when it goes wrong is a question that has disturbed scientists for a long time.
But for the first time, researchers have identified two clusters of genes that are believed to be related to human intelligence.
These clusters, called M1 and M3, are a network of genes and are thought to influence memory, attention, processing speed, and reasoning in the brain. They are considered to be under the control of master regulator switches.
These master regulator switches regulate how the gene networks function. If scientists can find these switches, there could be hope for manipulations in our genetic intelligence.
In the study, published in the journal Nature Neuroscience, the international team of researchers examined thousands of genes in the human brain. They compared the findings with genetic information from healthy people who had performed IQ tests as well as from people with neurological disorders and intellectual disabilities. In their analysis, they found that the genes that are related to human intelligence in healthy people were the same genes that caused cognitive disabilities when they were mutated.