Scientists scan brains to unlock mystery of twisting muscles

This study aimed to understand what goes wrong in the brains of people with dystonia, a disorder that causes muscles to contract and twist involuntarily. Researchers used MRI and PET brain scans on 31 adults, some with cervical dystonia and some healthy volunteers, to measure a specific brain chemical called acetylcholine. The goal was to gather knowledge about the disorder's cause to help guide future treatment research, not to test a new therapy.