The human brain is a complex and mysterious organ, capable of incredible feats of creativity, insight, and analysis. For centuries, scientists and philosophers have sought to understand what sets apart those individuals who possess exceptional intellectual abilities from those whose cognitive talents are more modest. Recent advances in neuroimaging technology have allowed researchers to peer inside the living brains of both smart and average people, providing new insights into the structural differences that may underlie variations in intelligence. 

In a study published in 2017, (Hilger, K., Ekman, M., Fiebach, C.J. et al. "Intelligence is associated with the modular structure of intrinsic brain network", Scientific Reports), researchers have found that that frontal and parietal regions of the brain are more strongly activated in people with a high IQ. In a more recent study by the same group, (Hilger, K., Ekman, M., Fiebach, C.J. et al. "Efficient hubs in the intelligent brain: Nodal efficiency of hub regions in the salience network is associated with general intelligence", Intelligence, Volume 60, 2017, Pages 10-25) shows that the brain’s anterior insula and anterior cingulate cortex are more actively connected with other regions in the case of intelligent individuals. The researchers also noted that high IQ is also associated with a reduced connectivity in the temporoparietal junction. 

While it is important to note that intelligence is a multifaceted concept that cannot be reduced to a single physical attribute, these studies suggest some intriguing patterns between superior cognitive performance and brain structure.
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