Wave activity in the visual area of the brain 

A wave of electrical activity passes over the visual area in the brain of a 32-day-old fat-tailed dunnart joey. Like other marsupials, dunnarts are born just days after conception and their brains primarily develop after birth. By studying brain development in dunnart joeys, Linda Richards, PhD, head of the Department of Neuroscience at Washington University School of Medicine in St. Louis, obtains insight into the early stages of human brain development that could shed light on the roots of brain conditions such as epilepsy, autism and intellectual disability.
See here for more about this research: medicine.wustl...
Video courtesy of Linda J. Richards/Washington University School of Medicine in St. Louis