Causes and characteristics of horizontal positional nystagmus

  title={Causes and characteristics of horizontal positional nystagmus},
  author={Corinna Lechner and Rachael L. Taylor and Chris Todd and Hamish G. MacDougall and Robbie Yavor and G. Michael Halmagyi and Miriam S. Welgampola},
  journal={Journal of Neurology},
Direction changing horizontal positional nystagmus can be observed in a variety of central and peripheral vestibular disorders. We tested sixty subjects with horizontal positional nystagmus and vertigo on the Epley Omniax® rotator. Monocular video recordings were performed with the right or left ear down, in the supine and prone positions. Nystagmus slow-phase velocity (SPV) was plotted as a function of time. Thirty-one subjects diagnosed with horizontal canalolithiasis had paroxysmal… CONTINUE READING


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