Dancer with MND performs on stage again through digital avatar A ballerina with Amyotrophic Lateral Sclerosis (ALS) says she was able to dance again after her brainwaves were used to power an avatar live on-stage in Amsterdam. Breanna Olson, a mother of three, found out two and a half years ago she had ALS, the most common form of motor neurone disease (MND) and which, with no known cure, weakens ...