Redefining cerebellar ataxia in degenerative ataxias: lessons from recent research on cerebellar systems

  title={Redefining cerebellar ataxia in degenerative ataxias: lessons from recent research on cerebellar systems},
  author={Masayoshi Tada and Masatoyo Nishizawa and Osamu Onodera},
  journal={Journal of Neurology, Neurosurgery \& Psychiatry},
  pages={922 - 928}
Recent advances in our understanding of neurophysiological functions in the cerebellar system have revealed that each region involved in degenerative ataxias contributes differently. To regulate voluntary movements, the cerebellum forms internal models within its neural circuits that mimic the behaviour of the sensorimotor system and objects in the external environment. The cerebellum forms two different internal models: forward and inverse. The forward model is formed by efference copy signals… 
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