RT Journal Article
SR Electronic
T1 On the brain networks organization of individuals with high versus average fluid intelligence: a combined DTI and MEG study
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2021.10.14.464389
DO 10.1101/2021.10.14.464389
A1 S.E.P. Bruzzone
A1 M. Lumaca
A1 E. Brattico
A1 P. Vuust
A1 M.L Kringelbach
A1 L. Bonetti
YR 2021
UL http://biorxiv.org/content/early/2021/10/15/2021.10.14.464389.abstract
AB The neural underpinning of human fluid intelligence (Gf) has gathered a large interest in the scientific community. Nonetheless, previous research did not provide a full understanding of such intriguing topic. Here, we studied the structural (from diffusion tensor imaging, DTI) and functional (from magnetoencephalography (MEG) resting state) connectivity in individuals with high versus average Gf scores. Our findings showed greater values in the brain areas degree distribution and higher proportion of long-range anatomical connections for high versus average Gfs. Further, the two groups presented different community structures, highlighting the structural and functional integration of the cingulate within frontal subnetworks of the brain in high Gfs. These results were consistently observed for structural connectivity and functional connectivity of delta, theta and alpha. Notably, gamma presented an opposite pattern, showing more segregation and lower degree distribution and connectivity in high versus average Gfs. Our study confirmed and expanded previous perspectives and knowledge on the “small-worldness” of the brain. Further, it complemented the widely investigated structural brain network of highly intelligent individuals with analyses on fast-scale functional networks in five frequency bands, highlighting key differences in the integration and segregation of information flow between slow and fast oscillations in groups with different Gf.Competing Interest StatementThe authors have declared no competing interest.