Many extrapyramidal motor diseases result from underlying neurodegenerative processes, which however are very advanced at the time the clinical diagnosis is made. From animal experiments it seems likely that we may soon have several substances that provide neuroprotective effects, but that their therapeutic use must be as early as possible. This fact was the starting point for the meeting, held at Chiemsee, that formed the basis of this book. The idea was to develop in strumental methods that, first, permit an earlier diagnosis by drawing on the experience of experts and, second, provide a...