Roger Fillingim, PhD, is a professor at the University of Florida College of Dentistry in Gainesville, Florida, US. His research focuses on biological, social, and psychological factors that influence the experience of pain, and he discusses his research in these areas in this RELIEF podcast. For a written transcript of the podcast, please click here. (Note: For slower connections, the podcast may take longer to load. If you experience difficulty, the podcast is also available through YouTube here).