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Horizontal eye movement disorders after posterior vermis infarctions.
  1. K Vahedi,
  2. S Rivaud,
  3. P Amarenco,
  4. C Pierrot-Deseilligny
  1. Service de Neurologie, Hôpital Saint-Antoine, Paris, France.

    Abstract

    The horizontal saccade, smooth pursuit, and vestibulo-ocular reflex gains were recorded in 19 patients with cerebellar infarction documented with MRI, and in a group of control subjects. Bilateral saccade hypometria and a decrease in ipsilateral smooth pursuit gain were found only in patients with a lesion affecting the posterior vermis. These results in humans support experimental findings suggesting that the posterior vermis controls both saccade accuracy and smooth pursuit velocity.

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