Smart people have better connected brains

Another brain region, the junction area between temporal and parietal cortex that has been related to the shielding of thoughts against irrelevant information, is less strongly connected to the rest of the brain network. "The different topological embedding of these regions into the brain network could make it easier for smarter persons to differentiate between important and irrelevant information -- which would be advantageous for many cognitive challenges," proposes Ulrike Basten, the study's principle investigator.