This National Multi-Site Training Program for Basic Sleep Research capitalizes on the combined strengths of six distinguished universities and their basic sleep research laboratories. It provides for the interdisciplinary training of predoctoral and postdoctoral trainees in basic sleep research and offers unique research and educational opportunities throughout the nation. The fields of training encompass sleep-related investigations dealing with specific physiological systems and processes as well as with all of the neuroscience disciplines including, but not limited to, molecular neuroscience, cellular neuroscience, developmental neuroscience, and behavioral neuroscience. Under special circumstances, trainees may also train in and utilize the resources of other laboratories that deal with a specific research topic that matches the trainee's particular area of interest. The participating universities are the University of California, Los Angeles, the University of Chicago, Harvard University, the University of Pennsylvania, Stanford University, and the University of Texas at Dallas. Full tuition and financial aid are provided by the National Institute of Mental Health for predoctoral trainees (five years of support) and for postdoctoral trainees (three years of support).