In recent years the inferior olive and its projection to the cerebellum have attracted considerable interest. Numerous experimental anatomic and electrophysiologic studies have been undertaken, and much new information has been brought forward. Many apparently discordant observations have been reported however, and on many points the data obtained by the use of different methbds and approaches appear to be diffi- cult to reconcile. Much of the interest in the olivocerebellar projection concerns the topographical localization within the projection. Particularly as a result of research in...