http://www.popularmechanics.com/science/health/a18339/new-kinds-of-brain-cells/Thanks to a handful of newly discovered neurons, the brain just became a little bit less mysterious. Today a team of neuroscientists led by Xiaolong Jiang and Andreas Tolias at Baylor College of Medicine in Houston announced six altogether new types of brain cells. The neuroscientists came across these new neurons while conducting a census of brain cells in adult mice in a part of the brain called the the primary visual cortex, an area chiefly concerned with sight. The researchers credit their new insight to a recently developed method of slicing razor-thin slices of mature brain. The discovery is reported today in the journal Science.