What is a traumatic brain injury? Does it differ from a concussion? Who is most at risk? What have we learned from bighorn sheep and woodpeckers?

We're joined by researcher and traumatic brain injury expert Dr. Ramesh Raghupathi as he explains what happens when the brain suffers an injury, and how his research group studies these injuries, and the complexity behind them, in the lab.

Dr. Ramesh Raghupathi is a professor in the Department of Neurobiology & Anatomy at Drexel University College of Medicine. After getting his PhD in Biochemistry and Molecular Biophysics from Virginia Commonwealth University, he did his postdoctoral training at the University of Connecticut Health Science Center and the University of Pennsylvania School of Medicine. Dr. Raghupathi's research focuses on traumatic brain injury in the immature and mature brain and understanding the complex neurochemical and cellular pathways underlying these injuries.