Non-mosaic Down syndrome, Vascular insult to the brain, Benign brain tumors, Parkinsonian syndrome, Cerebral palsy, Spinal cord disorders, Multiple sclerosis, Amyotrophic lateral sclerosis (ALS), Post-polio syndrome, Myasthenia gravis, Muscular dystrophy, Peripheral neuropathy, Neurodegenerative disorders of the central nervous system, such as Huntington’s disease, Friedreich’s ataxia, and spinocerebellar degeneration, Traumatic brain injury, Coma or persistent vegetative state, Motor neuron disorders other than ALS