Over the years, scientists and medical researchers have spent much time studying the human brain. Even after countless studies, the workings of the brain remain largely a mystery. New research, however, is shining light on how this complex organ develops. Scientists in California say they have discovered a formerly unknown period of brain development in newborn babies. They say the discovery may help answer questions about the human thought process. It may also lead to a better understanding of diseases of the human nervous system. Scientists once thought that the wiring of most babies’ brains -- their brain’s circuitry -- develops before they are born. But new research shows that this circuitry is a work-in-progress. It continues developing for months after birth.