The rhythm of music is very, very important for people with Parkinson's. But it's also very important with other sorts of patients, such as patients with Tourette's syndrome. Music helps them bring their impulses and tics under control. There is even a whole percussion orchestra made up exclusively of Tourette's patients.
Oliver SacksMuch more of the brain is devoted to movement than to language. Language is only a little thing sitting on top of this huge ocean of movement.
Oliver Sacks