As the epicenter of the nervous system, the brain is a complex and fascinating organ. Our brains are the engines that drive our bodies to process information and communicate with the world. Scientists today are making groundbreaking strides in understanding the intricate circuitry in the brain that sends signals to various parts of the body, and how this knowledge can be used to repair or regenerate damaged cells. In this April 2, 2013, Longwood Seminar, a panel of Harvard Medical School faculty members whose research explores neural circuitry will discuss this fast-evolving field. A video is also available.