Abstract：
:Cognitive brain networks such as the default-mode network (DMN), frontoparietal network, and salience network, are key functional networks of the human brain. Here we show that the rapid evolutionary cortical expansion of cognitive networks in the human brain, and most pronounced the DMN, runs parallel with high expression of human-accelerated genes (HAR genes). Using comparative transcriptomics analysis, we present that HAR genes are differentially more expressed in higher-order cognitive networks in humans compared to chimpanzees and macaques and that genes with high expression in the DMN are involved in synapse and dendrite formation. Moreover, HAR and DMN genes show significant associations with individual variations in DMN functional activity, intelligence, sociability, and mental conditions such as schizophrenia and autism. Our results suggest that the expansion of higher-order functional networks subserving increasing cognitive properties has been an important locus of genetic changes in recent human brain evolution.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Wei Y,de Lange SC,Scholtens LH,Watanabe K,Ardesch DJ,Jansen PR,Savage JE,Li L,Preuss TM,Rilling JK,Posthuma D,van den Heuvel MPdoi
10.1038/s41467-019-12764-8subject
Has Abstractpub_date
2019-10-24 00:00:00pages
4839issue
1issn
2041-1723pii
10.1038/s41467-019-12764-8journal_volume
10pub_type
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