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Acoustics and Perception of Speech Related to ALS. Summary: Amyotrophic Lateral Sclerosis (ALS) is a neuro-degenerative disorder producing deterioration of the motor cortex and motoneurons of the brainstem and spinal cord. In particular, patients are affected by the vulnerability of the cranial motoneurons that assist speech and swallowing. The disease usually leads to death in 3 to 5 years due to respiratory complications.
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