Bolero, neurological disorders

I am playing Bolero next weekend, so I thought I might post something about it. Like that Ravel suffered from some sort of degenerative neurological problem, and that people have been trying to link that to Bolero. I was trying to find the article I heard about a while ago, but I can't seem to. Here is the best I could find on NPR: possibility of Alzheimers, or perhaps another disorder. But the one I remember was not about Alzheimers, but rather, some sort of disease that made you repeat patterns. They were talking about some artists and quilt-makers having the disorder, as well. Anyway, the videos are more from one of my favorite movies, Allegro non troppo, and I quite like them. Hope you do too.