Since 1972 the European Training Programme in Brain and Behaviour Research (ETP), a sub-organization of the European Science Foundation, has been organizing a yearly Winterschool in Zuoz, Switzerland. This course with its unique blend of high-mountain air and high-level neuroscience enjoys an immense popularity. The project to organize the 1983 Winterschool on "Sleep Mechanisms," has been an outgrowth of the frequent scientific and personal contacts between the sleep research laboratories at the Universities of ZOrich and Lyon. In selecting the scientific programme we attempted not only to...