Research has found differences in the sulcal morphology of the posteromedial cortex between humans and chimpanzees. Studies have explored the organization and development of sulcal morphology in various parts of the brain, including the medial frontal cortex and prefrontal cortex, and its relation to cognition and brain evolution. The findings may provide insights into primate brain evolution and cognitive performance, although the uniqueness of certain brain structures to humans is still being investigated.