Cerebelloolivary Atrophy, also known as Olivopontocerebellar atrophy, is a condition characterized by the deterioration of two parts of the brain, the cerebellum and the olivary complex. The cerebellum controls muscle coordination and balance, and the olivary complex contributes to hearing. Symptoms may include: lack of muscle movement during involuntary movement such as walking (ataxia), contractions of the muscles in the roof of the mouth, speech and movement difficulties, and other neurological issues. This condition is hereditary (passed from parents to their children). Treatment varies on a case-by-case basis, and may include physical and occupational therapy for movement disorders.