This volume contains the Proceedings of the Meeting "Neuronal plasticity and gangliosides" which was held at Mantova, Italy, on May 29-31, 1985, as a satellite to the Tenth Meeting of the International Society for Neurochemistry, (Riva del Garda, Italy, May 19-24,1985). The Symposium took place in the "Teatro Bibiena," one of the oldest and most beautiful theatres in Italy, known for having been the place for some of the very first performances of W .A. Mozart. The number of registered participants in the Meeting was about 180 including 40 accor: Qpanying persons. The persons invited as Speakers or Chairmen of Colloquia and Workshops were 48. Eighteen countries were represented with the largest contingent coming from Italy, followed by Federal Republic of Germany, The United States, France and Great Britain. The Meeting was based on Colloquia, Workshops, Round Tables and Poster Sessions, with a total of 42 Lectures and 32 Poster presentations.