Explores the mechanisms of human memory, presenting new case studies and medical findings that reveal the complexity of the brain's memory center. Harvard psychiatrist Dr. Randy Buckner explains his research into memory functions and Alzheimer's disease. Dr. Faraneh Vargha-Khadem of University College London discusses her work with a 30-year old man who, due to hippocampal damage, has almost no memory capacity. And Dr. Alain Brunet of McGill University...