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 straight-ahead 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.
Similar content being viewed by others
References
Leigh RJ, Zee DS. The neurology of eye movements. London, UK: Oxford University Press; 2006. p. 241–60.
Yamazaki A, Zee DS. Rebound nystagmus: EOG analysis of a case with a floccular tumour. Br J Ophthalmol. 1979;63(11):782–6.
Hood JD, Kayan A, Leech J. Rebound nystagmus. Brain. 1973;96(3):507–26.
Zee DS, Yee RD, Cogan DG, et al. Ocular motor abnormalities in hereditary cerebellar ataxia. Brain. 1976;99(2):207–34.
Bondar RL, Sharpe JA, Lewis AJ. Rebound nystagmus in olivocerebellar atrophy: a clinicopathological correlation. Ann Neurol. 1984;15(5):474–7.
Zee DS, Yamazaki A, Butler PH, et al. Effects of ablation of flocculus and paraflocculus of eye movements in primate. J Neurophysiol. 1981;46(4):878–99.
Cannon SC, Robinson DA. Loss of the neural integrator of the oculomotor system from brain stem lesions in monkey. J Neurophysiol. 1987;57(5):1383–409.
Baier B, Dieterich M. Incidence and anatomy of gaze-evoked nystagmus in patients with cerebellar lesions. Neurology. 2011;76(4):361–5.
Walker MF, Zee DS. Directional abnormalities of vestibular and optokinetic responses in cerebellar disease. Ann N Y Acad Sci. 1999;871:205–20.
Kim JS, Ahn KW, Moon SY, et al. Isolated perverted head-shaking nystagmus in focal cerebellar infarction. Neurology. 2005;64(3):575–6.
Jen J, Kim GW, Baloh RW. Clinical spectrum of episodic ataxia type 2. Neurology. 2004;62(1):17–22.
Ranalli PJ, Sharpe JA. Contrapulsion of saccades and ipsilateral ataxia: a unilateral disorder of the rostral cerebellum. Ann Neurol. 1986;20(3):311–6.
Helmchen C, Straube A, Buttner U. Saccadic lateropulsion in Wallenberg’s syndrome may be caused by a functional lesion of the fastigial nucleus. J Neurol. 1994;241(7):421–6.
Kaski D, Bentley P, Lane R, et al. Up-down asymmetry of saccadic contrapulsion in lateral medullary syndrome. J Neuroophthalmol. 2012;32(3):224–6.
Conflict of Interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Below is the link to the electronic supplementary material.
Gaze-evoked and downbeat nystagmus during lateral gaze and rebound upbeat nystagmus on resuming the straight-ahead position. The patient shows gaze-evoked and downbeat nystagmus during lateral gazes and upbeat nystagmus on resuming the straight-ahead position after lateral gaze in either direction. (WMV 40763 kb)
Leftward pulsion during upward saccades. The patient shows leftward pulsion only during upward saccades, giving rise to a curved trajectory, in the presence of normal downward and horizontal saccades. (WMV 16911 kb)
Rights and permissions
About this article
Cite this article
Kim, HJ., Kim, JS., Choi, JH. et al. Rebound Upbeat Nystagmus After Lateral Gaze in Episodic Ataxia Type 2. Cerebellum 13, 411–413 (2014). https://doi.org/10.1007/s12311-014-0547-6
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12311-014-0547-6