Research is being conducted on the human ventromedial prefrontal cortex, focusing on its sulcal morphology and its influence on functional organization. Studies are exploring the differences in sulcal morphology between humans and chimpanzees, as well as the relationship between sulcal morphology and cognitive functions such as reasoning. The findings may provide insights into primate brain evolution and the development of human cognition, although some results suggest that certain sulcal features may not be unique to humans.