Two Brains in One: Unraveling the Mystery of Human Brain Development A recent Stanford study published in Nature Neuroscience has turned conventional wisdom on its head by revealing that the human brain is a composite structure formed from two ancient nervous systems.
For decades, scientists believed that a single early progenitor cell gives rise to the entire brain. However, this new research shows that the brain develops from distinct populations of cells.
The idea that our brains are composed of different populations is not entirely new in evolutionary biology.