Rebound upbeat nystagmus after lateral gaze in episodic ataxia type 2

Hyo Jung Kim, Ji Soo Kim, Jae Hwan Choi, Jin Hong Shin, Kwang Dong Choi, David S. Zee

Research output: Contribution to journalArticlepeer-review

Abstract

Rebound nystagmus is a transient nystagmus that occurs on resuming the straight-ahead position after prolonged eccentric gaze. Even though rebound nystagmus is commonly associated with gaze-evoked nystagmus (GEN), development of rebound nystagmus in a different plane of gaze has not been described. We report a patient with episodic ataxia type 2 who showed transient upbeat nystagmus on resuming the straightahead position after sustained lateral gaze that had induced GEN and downbeat nystagmus. The rebound upbeat nystagmus may be ascribed to a shifting null in the vertical plane as a result of an adaptation to the downbeat nystagmus that developed during lateral gaze.

Original languageEnglish (US)
Pages (from-to)411-413
Number of pages3
JournalCerebellum
Volume13
Issue number3
DOIs
StatePublished - Jun 2014

Keywords

  • Episodic ataxia
  • Gaze-evoked nystagmus
  • Lateropulsion
  • Rebound nystagmus

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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