One person in five suffers from a disorder of the brain or nervous system. They are victims of accidents, strokes, or diseases such as alzheimer's and multiple sclerosis. These conditions can cause brain damage, which leads to memory loss or major physical disability. As the brain is unable to repair itself, sufferers are often left confined to wheelchairs, or dependent on drugs, for life. Georgina Ferry reports on recent attempts to persuade the brain to improve on nature and restore its activities after damage.
Producer JENNY WALKER
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