Sulcal organization in the medial frontal cortex provides insights into primate brain evolution

• DOI: 10.1038/s41467-019-11347-x
• Publication Date: 2019-07-31T10:02:57Z
• Authors: Céline Amiez; Jérôme Sallet; William D. Hopkins; Adrien Meguerditc...; Fadila Hadj-Bouziane; Suliann Ben Hamed; Charles R. E. Wilson; Emmanuel Procyk; Michael Petrides
• Keywords: Sulcus; Frontal lobe; Frontal cortex; Human brain

Abstract Although the relative expansion of frontal cortex in primate evolution is generally accepted, nature human uniqueness, if any, and between-species anatomo-functional comparisons areas remain controversial. To provide a novel interpretation brains, sulcal morphological variability medial was assessed Old World monkeys (macaque/baboon) Hominoidea (chimpanzee/human). We show that both possess paracingulate sulcus, which previously thought to be unique brain linked higher cognitive functions, such as mentalizing. Also, we systematic organization can traced from species, demonstrating an evolutionarily conserved organizational principle. These data new framework compare morphology, cytoarchitectonic areal distribution, connectivity, function across order, leading clear predictions about how other brains might anatomo-functionally organized.