Interview with Dr. Michael Merzenich, Emeritus Professor at UCSF, a leading pioneer in brain plasticity research. In the late 1980s, Dr. Merzenich was on the team that invented the cochlear implant. In 1996, he was the founding CEO of Scientific Learning Corporation (Nasdaq: SCIL), and in 2004 became co-founder and Chief Scientific Officer of Posit Science. He was elected to the National Academy of Sciences in 1999 and to the Institute of Medicine this year. He retired as Francis A. Sooy Professor and Co-Director of the Keck Center for Integrative Neuroscience at the University of California at San Francisco in 2007. You may have learned about his work in one of PBS TV specials, multiple media appearances, or neuroplasticity-related books.