This event is a two and a half day international Neuroscience Symposium. The symposium starts with an evening session for a keynote speaker and four morning or afternoon sessions for which twenty internationally renowned neuroscientists are invited from throughout the world. The majority of the invited speakers are from institutions other than MIT or RIKEN, although postdoctoral fellows and graduate students from the Picower Center and RIKEN BSI have an opportunity to present their work in poster sessions. The Symposium is cosponsored by the Picower Center and RIKEN, anybody interested can participate free of charge. The symposium has been very popular, attracting over 250 participants each year. The next symposium will be held on September 22, 23 and the 24, 2004.